| NORTHERN IRELAND 1920-21 | |||||||||
| Irish League | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Glentoran FC Belfast | 8 | 7 | 0 | 1 | 20 | 6 | 3,333 | 14 |
| 2 | Glenavon FC Lurgan | 8 | 5 | 2 | 1 | 14 | 8 | 1,750 | 12 |
| 3 | Linfield FC Belfast | 8 | 3 | 3 | 2 | 8 | 6 | 1,333 | 9 |
| 4 | Cliftonville FC Belfast | 8 | 1 | 1 | 6 | 5 | 15 | 0,333 | 3 |
| 5 | Distillery FC Belfast | 8 | 1 | 0 | 7 | 7 | 19 | 0,368 | 2 |
| 40 | 17 | 6 | 17 | 54 | 54 | 40 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| Admitted | Queen's Island FC Belfast | ||||||||
| Belfast = Béal Feirste | Lurgan = an Lorgain | ||||||||
| English = Irish | |||||||||
| CUP | |||||||||
| Semifinals | Glenavon FC Lurgan - Shelbourne FC Dublin | 0-0 | +w/o | ||||||
| Glentoran FC Belfast - Brantwood FC Belfast | 4-3 | ||||||||
| Final (Belfast 26.03.1921) | Glentoran FC Belfast - Glenavon FC Lurgan | 2-0 | |||||||
| CITY CUP | |||||||||
| (tournament played in league format) | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Glenavon FAC Lurgan | 8 | 5 | 2 | 1 | 11 | 5 | 2,200 | 12 |
| 2 | Glentoran FAC Belfast | 8 | 4 | 3 | 1 | 9 | 2 | 4,500 | 11 |
| 3 | Linfield FAC Belfast | 8 | 4 | 2 | 2 | 8 | 5 | 1,600 | 10 |
| 4 | Distillery FC Belfast | 8 | 1 | 2 | 5 | 5 | 12 | 0,417 | 4 |
| 5 | Cliftonville FAC Belfast | 8 | 1 | 1 | 6 | 2 | 11 | 0,182 | 3 |
| 40 | 15 | 10 | 15 | 35 | 35 | 40 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| NORTHERN IRELAND 1921-22 | |||||||||
| Irish League | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Linfield FC Belfast | 10 | 7 | 3 | 0 | 18 | 6 | 3,000 | 17 |
| 2 | Glentoran FC Belfast | 10 | 5 | 3 | 2 | 14 | 7 | 2,000 | 13 |
| 3 | Distillery FC Belfast | 10 | 5 | 1 | 4 | 18 | 17 | 1,059 | 11 |
| 4 | Glenavon FC Lurgan | 10 | 3 | 2 | 5 | 11 | 14 | 0,786 | 8 |
| 5 | Queen's Island FC Belfast | 10 | 3 | 2 | 5 | 9 | 16 | 0,563 | 8 |
| 6 | Cliftonville FC Belfast | 10 | 1 | 1 | 8 | 3 | 13 | 0,231 | 3 |
| 60 | 24 | 12 | 24 | 73 | 73 | 60 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| Belfast = Béal Feirste | Lurgan = an Lorgain | ||||||||
| English = Irish | |||||||||
| CUP | |||||||||
| Semifinals | Glenavon FC Lurgan - Linfield Rangers FC Belfast | 2-1 | |||||||
| Queen's Island FC Belfast - Linfield FC Belfast | 0-1 | ||||||||
| Final (Belfast 25.03.1922) | Linfield FC Belfast - Glenavon FC Lurgan | 2-1 | |||||||
| Queen's Island FC Belfast dissolved in 1960 | Linfield Rangers FC Belfast dissolved in ??? | ||||||||
| CITY CUP | |||||||||
| (tournament played in league format) | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Linfield FAC Belfast | 10 | 8 | 2 | 0 | 17 | 6 | 2,833 | 18 |
| 2 | Glentoran FAC Belfast | 10 | 6 | 2 | 2 | 19 | 12 | 1,583 | 14 |
| 3 | Glenavon FAC Lurgan | 10 | 4 | 3 | 3 | 23 | 17 | 1,353 | 11 |
| 4 | Cliftonville FAC Belfast | 10 | 3 | 3 | 4 | 11 | 14 | 0,786 | 9 |
| 5 | Queen's Island FC Belfast | 10 | 3 | 2 | 5 | 14 | 19 | 0,737 | 8 |
| 6 | Distillery FC Belfast | 10 | 0 | 0 | 10 | 12 | 28 | 0,429 | 0 |
| 60 | 24 | 12 | 24 | 96 | 96 | 60 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| NORTHERN IRELAND 1922-23 | |||||||||
| Irish League | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Linfield FC Belfast | 10 | 7 | 2 | 1 | 20 | 5 | 4,000 | 16 |
| 2 | Queen's Island FC Belfast | 10 | 5 | 2 | 3 | 17 | 21 | 0,810 | 12 |
| 3 | Glentoran FC Belfast | 10 | 4 | 3 | 3 | 14 | 9 | 1,556 | 11 |
| 4 | Distillery FC Belfast | 10 | 4 | 2 | 4 | 12 | 13 | 0,923 | 10 |
| 5 | Cliftonville FC Belfast | 10 | 2 | 2 | 6 | 11 | 19 | 0,579 | 6 |
| 6 | Glenavon FC Lurgan | 10 | 2 | 1 | 7 | 12 | 19 | 0,632 | 5 |
| 60 | 24 | 12 | 24 | 86 | 86 | 60 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| Admitted | Barn FC Carrickfergus, Ards FC Newtownards, Newry Town FC, Larne FC | ||||||||
| Belfast = Béal Feirste | Lurgan = an Lorgain | ||||||||
| English = Irish | |||||||||
| CUP | |||||||||
| Semifinals | Glentoran FC Belfast - Glenavon FC Lurgan | 2-1 | |||||||
| Linfield FC Belfast - Distillery FC Belfast | 1-0 | ||||||||
| Final (Belfast 21.03.1923) | Linfield FC Belfast - Glentoran FC Belfast | 2-0 | |||||||
| Queen's Island FC Belfast dissolved in 1960 | |||||||||
| CITY CUP | |||||||||
| (tournament played in league format) | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Queen's Island FC Belfast | 10 | 7 | 0 | 3 | 24 | 14 | 1,714 | 14 |
| 2 | Distillery FC Belfast | 10 | 5 | 2 | 3 | 18 | 14 | 1,286 | 12 |
| 3 | Glentoran FAC Belfast | 10 | 5 | 2 | 3 | 16 | 16 | 1,000 | 12 |
| 4 | Linfield FAC Belfast | 10 | 2 | 5 | 3 | 19 | 14 | 1,357 | 9 |
| 5 | Cliftonville FAC Belfast | 10 | 3 | 2 | 5 | 8 | 15 | 0,533 | 8 |
| 6 | Glenavon FAC Lurgan | 10 | 1 | 3 | 6 | 5 | 17 | 0,294 | 5 |
| 60 | 23 | 14 | 23 | 90 | 90 | 60 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| NORTHERN IRELAND 1923-24 | |||||||||
| Irish League | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Queen's Island FC Belfast (-2) | 18 | 12 | 4 | 2 | 48 | 18 | 2,667 | 26 |
| 2 | Distillery FC Belfast | 18 | 7 | 6 | 5 | 32 | 30 | 1,067 | 20 |
| 3 | Linfield FC Belfast | 18 | 8 | 4 | 6 | 31 | 27 | 1,148 | 20 |
| 4 | Glenavon FC Lurgan | 18 | 5 | 10 | 3 | 27 | 30 | 0,900 | 20 |
| 5 | Glentoran FC Belfast | 18 | 9 | 1 | 8 | 32 | 23 | 1,391 | 19 |
| 6 | Cliftonville FC Belfast | 18 | 6 | 6 | 6 | 24 | 24 | 1,000 | 18 |
| 7 | Barn FC Carrickfergus | 18 | 6 | 4 | 8 | 23 | 29 | 0,793 | 16 |
| 8 | Larne FC | 18 | 6 | 4 | 8 | 33 | 43 | 0,767 | 16 |
| 9 | Ards FC Newtownards | 18 | 5 | 4 | 9 | 18 | 30 | 0,600 | 14 |
| 10 | Newry Town FC | 18 | 2 | 5 | 11 | 25 | 39 | 0,641 | 9 |
| 180 | 66 | 48 | 66 | 293 | 293 | 178 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| Queen's Island FC Belfast 2 points deducted by Federation decision | |||||||||
| Admitted | Belfast Celtic FC, Portadown FC | ||||||||
| 2nd place play-off series | Distillery FC Belfast - Linfield FC Belfast | 2-2 | |||||||
| Glenavon FC Lurgan - Distillery FC Belfast | 1-3 | ||||||||
| Linfield FC Belfast - Glenavon FC Lurgan | 4-0 | ||||||||
| Distillery FC Belfast - Linfield FC Belfast | 2-1 | ||||||||
| Belfast = Béal Feirste | Larne = Latharna | ||||||||
| Lurgan = an Lorgain | Newtownards = Baile Nua na hArda | ||||||||
| Carrickfurgus = Carraig Fhearghais | Newry = úr Cinn Trá | ||||||||
| English = Irish | |||||||||
| CUP | |||||||||
| Semifinals | Queen's Island FC Belfast - Crusaders FC Belfast | 1-1 | 1-0 | ||||||
| Willowfield FC Belfst - Larne FC | 1-0 | ||||||||
| Final (Belfast 29.03.1924) | Queen's Island FC Belfast - Willowfield FC Belfst | 1-0 | |||||||
| Queen's Island FC Belfast dissolved in 1960 | Barn FC Carrickfergus dissolved in 1928 | ||||||||
| Willowfield FC Belfst dissolved in 1930 | |||||||||
| CITY CUP | |||||||||
| (tournament played in league format) | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Queen's Island FC Belfast | 9 | 6 | 2 | 1 | 28 | 9 | 3,111 | 14 |
| 2 | Glentoran FAC Belfast | 9 | 6 | 2 | 1 | 26 | 12 | 2,167 | 14 |
| 3 | Distillery FC Belfast | 9 | 5 | 1 | 3 | 14 | 11 | 1,273 | 11 |
| 4 | Linfield FAC Belfast | 9 | 4 | 2 | 3 | 13 | 15 | 0,867 | 10 |
| 5 | Larne FC | 9 | 4 | 1 | 4 | 19 | 17 | 1,118 | 9 |
| 6 | Ards FC Newtownards | 9 | 3 | 3 | 3 | 11 | 11 | 1,000 | 9 |
| 7 | Barn FC Carrickfergus | 9 | 3 | 1 | 5 | 7 | 16 | 0,438 | 7 |
| 8 | Glenavon FAC Lurgan | 9 | 2 | 2 | 5 | 6 | 13 | 0,462 | 6 |
| 9 | Newry Town FC | 9 | 2 | 1 | 6 | 11 | 21 | 0,524 | 5 |
| 10 | Cliftonville FAC Belfast | 9 | 2 | 1 | 6 | 10 | 20 | 0,500 | 5 |
| 90 | 37 | 16 | 37 | 145 | 145 | 90 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| Play-off (19.05.1924) | Queen's Island FC Belfast - Glentoran FAC Belfast | 3-2 | |||||||
| NORTHERN IRELAND 1924-25 | |||||||||
| Irish League | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Glentoran FC Belfast | 22 | 17 | 3 | 2 | 53 | 18 | 2,944 | 37 |
| 2 | Queen's Island FC Belfast | 22 | 13 | 6 | 3 | 48 | 23 | 2,087 | 32 |
| 3 | Belfast Celtic FC | 22 | 11 | 5 | 6 | 36 | 31 | 1,161 | 27 |
| 4 | Portadown FC | 22 | 10 | 5 | 7 | 42 | 35 | 1,200 | 25 |
| 5 | Glenavon FC Lurgan | 22 | 11 | 2 | 9 | 45 | 36 | 1,250 | 24 |
| 6 | Linfield FC Belfast | 22 | 10 | 2 | 10 | 34 | 31 | 1,097 | 22 |
| 7 | Ards FC Newtownards | 22 | 7 | 4 | 11 | 39 | 41 | 0,951 | 18 |
| 8 | Larne FC | 22 | 7 | 4 | 11 | 30 | 47 | 0,638 | 18 |
| 9 | Distillery FC Belfast | 22 | 6 | 4 | 12 | 31 | 40 | 0,775 | 16 |
| 10 | Barn FC Carrickfergus | 22 | 6 | 4 | 12 | 29 | 40 | 0,725 | 16 |
| 11 | Cliftonville FC Belfast | 22 | 6 | 4 | 12 | 21 | 32 | 0,656 | 16 |
| 12 | Newry Town FC | 22 | 5 | 3 | 14 | 34 | 68 | 0,500 | 13 |
| 264 | 109 | 46 | 109 | 442 | 442 | 264 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| Belfast = Béal Feirste | Larne = Latharna | ||||||||
| Portadown = Port an Dúnáin | Carrickfurgus = Carraig Fhearghais | ||||||||
| Lurgan = an Lorgain | Newry = úr Cinn Trá | ||||||||
| Newtownards = Baile Nua na hArda | |||||||||
| English = Irish | |||||||||
| CUP | |||||||||
| Semifinals | Distillery FC Belfast - Glenavon FC Lurgan | 2-0 | |||||||
| Glentoran FC Belfast - Crusaders FC Belfast | 2-0 | ||||||||
| Final (Belfast 21.03.1925) | Distillery FC Belfast - Glentoran FC Belfast | 2-1 | |||||||
| Queen's Island FC Belfast dissolved in 1960 | Belfast Celtic FC dissolved in 1960 | ||||||||
| Barn FC Carrickfergus dissolved in 1928 | |||||||||
| CITY CUP | |||||||||
| (tournament played in league format) | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Queen's Island FC Belfast | 11 | 7 | 3 | 1 | 20 | 9 | 2,222 | 17 |
| 2 | Glentoran FAC Belfast | 11 | 8 | 1 | 2 | 25 | 15 | 1,667 | 17 |
| 3 | Linfield FAC Belfast | 11 | 5 | 4 | 2 | 23 | 9 | 2,556 | 14 |
| 4 | Distillery FC Belfast | 11 | 6 | 1 | 4 | 18 | 11 | 1,636 | 13 |
| 5 | Glenavon FAC Lurgan | 11 | 4 | 4 | 3 | 17 | 14 | 1,214 | 12 |
| 6 | Portadown FC | 11 | 4 | 4 | 3 | 15 | 13 | 1,154 | 12 |
| 7 | Larne FC | 11 | 3 | 4 | 4 | 15 | 19 | 0,789 | 10 |
| 8 | Ards FC Newtownards | 11 | 3 | 3 | 5 | 12 | 19 | 0,632 | 9 |
| 9 | Barn FC Carrickfergus | 11 | 2 | 5 | 4 | 10 | 16 | 0,625 | 9 |
| 10 | Cliftonville FAC Belfast | 11 | 2 | 2 | 7 | 14 | 24 | 0,583 | 6 |
| 11 | Belfast Celtic FC | 11 | 3 | 2 | 6 | 9 | 12 | 0,750 | 8 |
| 12 | Newry Town FC | 11 | 1 | 3 | 7 | 9 | 26 | 0,346 | 5 |
| 1 | |||||||||
| 132 | 48 | 37 | 48 | 187 | 187 | 132 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| Play-off (14.05.24, 20.05.24 and 02.09.24) | Queen's Island FC Belfast - Glentoran FAC Belfast | 0-0 | 1-1 | 3-2 | |||||
| NORTHERN IRELAND 1925-26 | |||||||||
| Irish League | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Belfast Celtic FC | 22 | 16 | 1 | 5 | 52 | 38 | 1,368 | 33 |
| 2 | Glentoran FC Belfast | 22 | 13 | 4 | 5 | 53 | 31 | 1,710 | 30 |
| 3 | Larne FC | 22 | 11 | 5 | 6 | 45 | 33 | 1,364 | 27 |
| 4 | Ards FC Newtownards | 22 | 11 | 4 | 7 | 56 | 42 | 1,333 | 26 |
| 5 | Distillery FC Belfast | 22 | 10 | 5 | 7 | 37 | 35 | 1,057 | 25 |
| 6 | Queen's Island FC Belfast | 22 | 9 | 5 | 8 | 42 | 37 | 1,135 | 23 |
| 7 | Glenavon FC Lurgan | 22 | 10 | 3 | 9 | 36 | 37 | 0,973 | 23 |
| 8 | Portadown FC | 22 | 7 | 7 | 8 | 43 | 41 | 1,049 | 21 |
| 9 | Linfield FC Belfast | 22 | 8 | 5 | 9 | 47 | 46 | 1,022 | 21 |
| 10 | Newry Town FC | 22 | 5 | 5 | 12 | 33 | 53 | 0,623 | 15 |
| 11 | Cliftonville FC Belfast | 22 | 4 | 6 | 12 | 29 | 39 | 0,744 | 14 |
| 12 | Barn FC Carrickfergus | 22 | 2 | 2 | 18 | 25 | 66 | 0,379 | 6 |
| 264 | 106 | 52 | 106 | 498 | 498 | 264 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| Belfast = Béal Feirste | Portadown = Port an Dúnáin | ||||||||
| Larne = Latharna | Newry = úr Cinn Trá | ||||||||
| Newtownards = Baile Nua na hArda | Carrickfurgus = Carraig Fhearghais | ||||||||
| Lurgan = an Lorgain | |||||||||
| English = Irish | |||||||||
| CUP | |||||||||
| Semifinals | Belfast Celtic FC - Nerwy Town FC | 3-0 | |||||||
| Linfield FC Belfast - Glentoran FC Belfast | 2-2 | 2-2 | 3-2 | ||||||
| Final (Belfast 27.03.1926) | Belfast Celtic FC - Linfield FC Belfast | 3-2 | |||||||
| Belfast Celtic FC dissolved in 1960 | Queen's Island FC Belfast dissolved in 1960 | ||||||||
| Barn FC Carrickfergus dissolved in 1928 | |||||||||
| CITY CUP | |||||||||
| (tournament played in league format) | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Belfast Celtic FC | 11 | 8 | 1 | 2 | 32 | 18 | 1,778 | 17 |
| 2 | Queen's Island FC Belfast | 11 | 6 | 4 | 1 | 21 | 14 | 1,500 | 16 |
| 3 | Glentoran FAC Belfast | 11 | 6 | 3 | 2 | 30 | 17 | 1,765 | 15 |
| 4 | Distillery FC Belfast | 11 | 5 | 4 | 2 | 18 | 13 | 1,385 | 14 |
| 5 | Newry Town FC | 11 | 5 | 3 | 3 | 15 | 18 | 0,833 | 13 |
| 6 | Cliftonville FAC Belfast | 11 | 5 | 2 | 4 | 15 | 16 | 0,938 | 12 |
| 7 | Portadown FC | 11 | 5 | 1 | 5 | 29 | 23 | 1,261 | 11 |
| 8 | Glenavon FAC Lurgan | 11 | 4 | 2 | 5 | 16 | 15 | 1,067 | 10 |
| 9 | Ards FC Newtownards | 11 | 4 | 1 | 6 | 18 | 19 | 0,947 | 9 |
| 10 | Larne FC | 11 | 2 | 2 | 7 | 15 | 30 | 0,500 | 6 |
| 11 | Linfield FAC Belfast | 11 | 2 | 1 | 8 | 16 | 21 | 0,762 | 5 |
| 12 | Barn FC Carrickfergus | 11 | 1 | 2 | 8 | 10 | 31 | 0,323 | 4 |
| 1 | |||||||||
| 132 | 53 | 27 | 53 | 235 | 235 | 132 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| NORTHERN IRELAND 1926-27 | |||||||||
| Irish League | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Belfast Celtic FC | 22 | 15 | 7 | 0 | 66 | 26 | 2,538 | 37 |
| 2 | Queen's Island FC Belfast | 22 | 12 | 6 | 4 | 46 | 34 | 1,353 | 30 |
| 3 | Distillery FC Belfast | 22 | 12 | 5 | 5 | 56 | 36 | 1,556 | 29 |
| 4 | Glentoran FC Belfast | 22 | 11 | 5 | 6 | 56 | 48 | 1,167 | 27 |
| 5 | Ards FC Newtownards | 22 | 9 | 7 | 6 | 42 | 42 | 1,000 | 25 |
| 6 | Larne FC | 22 | 10 | 4 | 8 | 55 | 50 | 1,100 | 24 |
| 7 | Linfield FC Belfast | 22 | 8 | 6 | 8 | 41 | 35 | 1,171 | 22 |
| 8 | Portadown FC | 22 | 7 | 4 | 11 | 50 | 48 | 1,042 | 18 |
| 9 | Newry Town FC | 22 | 6 | 5 | 11 | 39 | 48 | 0,813 | 17 |
| 10 | Cliftonville FC Belfast | 22 | 7 | 3 | 12 | 32 | 40 | 0,800 | 17 |
| 11 | Glenavon FC Lurgan | 22 | 4 | 3 | 15 | 33 | 57 | 0,579 | 11 |
| 12 | Barn FC Carrickfergus | 22 | 2 | 3 | 17 | 35 | 87 | 0,402 | 7 |
| 264 | 103 | 58 | 103 | 551 | 551 | 264 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| Admitted | Coleraine FC, Bangor FC | ||||||||
| Belfast = Béal Feirste | Newry = úr Cinn Trá | ||||||||
| Newtownards = Baile Nua na hArda | Lurgan = an Lorgain | ||||||||
| Larne = Latharna | Carrickfurgus = Carraig Fhearghais | ||||||||
| Portadown = Port an Dúnáin | |||||||||
| English = Irish | |||||||||
| CUP | |||||||||
| Semifinals | Belfast Celtic FC - Ards FC Newtownards | 1-3 | |||||||
| Crusaders FC Belfast - Cliftonville FC Belfast | 2-4 | ||||||||
| Final (Belfast 26.03.1927) | Ards FC Newtownards - Cliftonville FC Belfast | 3-2 | |||||||
| Belfast Celtic FC dissolved in 1960 | Queen's Island FC Belfast dissolved in 1960 | ||||||||
| Barn FC Carrickfergus dissolved in 1928 | |||||||||
| CITY CUP | |||||||||
| (tournament played in league format) | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Linfield FAC Belfast | 11 | 8 | 2 | 1 | 24 | 10 | 2,400 | 18 |
| 2 | Belfast Celtic FC | 11 | 8 | 1 | 2 | 32 | 16 | 2,000 | 17 |
| 3 | Queen's Island FC Belfast | 11 | 6 | 4 | 1 | 21 | 12 | 1,750 | 16 |
| 4 | Cliftonville FAC Belfast | 11 | 6 | 2 | 3 | 17 | 11 | 1,545 | 14 |
| 5 | Portadown FC | 11 | 4 | 3 | 4 | 28 | 21 | 1,333 | 11 |
| 6 | Glentoran FAC Belfast | 11 | 5 | 0 | 6 | 25 | 30 | 0,833 | 10 |
| 7 | Ards FC Newtownards | 11 | 3 | 3 | 5 | 25 | 25 | 1,000 | 9 |
| 8 | Larne FC | 11 | 4 | 1 | 6 | 16 | 18 | 0,889 | 9 |
| 9 | Glenavon FAC Lurgan | 11 | 2 | 5 | 4 | 16 | 19 | 0,842 | 9 |
| 10 | Distillery FC Belfast | 11 | 4 | 1 | 6 | 14 | 19 | 0,737 | 9 |
| 11 | Newry Town FC | 11 | 2 | 3 | 6 | 14 | 31 | 0,452 | 7 |
| 12 | Barn FC Carrickfergus | 11 | 1 | 1 | 9 | 19 | 39 | 0,487 | 3 |
| 1 | |||||||||
| 132 | 53 | 27 | 53 | 251 | 251 | 132 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| NORTHERN IRELAND 1927-28 | |||||||||
| Irish League | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Belfast Celtic FC | 26 | 20 | 5 | 1 | 101 | 35 | 2,886 | 45 |
| 2 | Linfield FC Belfast | 26 | 18 | 5 | 3 | 88 | 34 | 2,588 | 41 |
| 3 | Newry Town FC | 26 | 13 | 7 | 6 | 55 | 30 | 1,833 | 33 |
| 4 | Larne FC | 26 | 13 | 4 | 9 | 63 | 55 | 1,145 | 30 |
| 5 | Glentoran FC Belfast | 26 | 12 | 5 | 9 | 63 | 65 | 0,969 | 29 |
| 6 | Distillery FC Belfast | 26 | 11 | 5 | 10 | 57 | 60 | 0,950 | 27 |
| 7 | Glenavon FC Lurgan | 26 | 9 | 7 | 10 | 45 | 44 | 1,023 | 25 |
| 8 | Portadown FC | 26 | 10 | 3 | 13 | 61 | 58 | 1,052 | 23 |
| 9 | Coleraine FC | 26 | 9 | 5 | 12 | 63 | 69 | 0,913 | 23 |
| 10 | Bangor FC | 26 | 9 | 5 | 12 | 57 | 69 | 0,826 | 23 |
| 11 | Ards FC Newtownards | 26 | 8 | 5 | 13 | 54 | 69 | 0,783 | 21 |
| 12 | Queen's Island FC Belfast | 26 | 5 | 7 | 14 | 46 | 69 | 0,667 | 17 |
| 13 | Barn FC Carrickfergus | 26 | 5 | 4 | 17 | 38 | 91 | 0,418 | 14 |
| 14 | Cliftonville FC Belfast | 26 | 5 | 3 | 18 | 29 | 72 | 0,403 | 13 |
| 364 | 147 | 70 | 147 | 820 | 820 | 364 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| Barn FC Carrickfergus not re-elected | |||||||||
| Admitted | Ballymena FC | ||||||||
| Belfast = Béal Feirste | Bangor = Beannchar | ||||||||
| Newry = úr Cinn Trá | Portadown = Port an Dúnáin | ||||||||
| Larne = Latharna | Newtownards = Baile Nua na hArda | ||||||||
| Lurgan = an Lorgain | Carrickfurgus = Carraig Fhearghais | ||||||||
| Coleraine = Cúil Raithin | |||||||||
| English = Irish | |||||||||
| CUP | |||||||||
| Semifinals | Larne FC - Portadown FC | 2-1 | |||||||
| Willowfield FC Belfast - Belfast Celtic FC | 1-1 | 2-1 | |||||||
| Final (Belfast 25.04.1928) | Willowfield FC Belfast - Larne FC | 1-0 | |||||||
| Belfast Celtic FC dissolved in 1960 | Queen's Island FC Belfast dissolved in 1960 | ||||||||
| Barn FC Carrickfergus dissolved in 1928 | Willowfield FC Belfst dissolved in 1930 | ||||||||
| CITY CUP | |||||||||
| (tournament played in league format) | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Belfast Celtic FC | 13 | 10 | 2 | 1 | 33 | 16 | 2,063 | 22 |
| 2 | Linfield FAC Belfast | 13 | 9 | 2 | 2 | 34 | 14 | 2,429 | 20 |
| 3 | Distillery FC Belfast | 13 | 9 | 1 | 3 | 34 | 19 | 1,789 | 19 |
| 4 | Glenavon FAC Lurgan | 13 | 7 | 3 | 3 | 25 | 18 | 1,389 | 17 |
| 5 | Larne FC | 13 | 7 | 2 | 4 | 28 | 25 | 1,120 | 16 |
| 6 | Coleraine FC | 13 | 7 | 1 | 5 | 28 | 28 | 1,000 | 15 |
| 7 | Portadown FC | 13 | 6 | 2 | 5 | 39 | 30 | 1,300 | 14 |
| 8 | Newry Town FC | 13 | 6 | 1 | 6 | 25 | 25 | 1,000 | 13 |
| 9 | Bangor FC | 13 | 5 | 1 | 7 | 30 | 34 | 0,882 | 11 |
| 10 | Glentoran FAC Belfast | 13 | 4 | 1 | 8 | 24 | 28 | 0,857 | 9 |
| 11 | Queen's Island FC Belfast | 13 | 3 | 2 | 8 | 26 | 33 | 0,788 | 8 |
| 12 | Cliftonville FAC Belfast | 13 | 3 | 2 | 8 | 14 | 28 | 0,500 | 8 |
| 13 | Ards FC Newtownards | 13 | 1 | 4 | 8 | 21 | 40 | 0,525 | 6 |
| 14 | Barn FC Carrickfergus | 13 | 0 | 4 | 9 | 15 | 38 | 0,395 | 4 |
| 1 | |||||||||
| 182 | 77 | 29 | 77 | 376 | 376 | 182 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| NORTHERN IRELAND 1928-29 | |||||||||
| Irish League | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Belfast Celtic FC | 26 | 22 | 4 | 0 | 116 | 23 | 5,043 | 48 |
| 2 | Linfield FC Belfast | 26 | 19 | 1 | 6 | 88 | 44 | 2,000 | 39 |
| 3 | Glentoran FC Belfast | 26 | 15 | 3 | 8 | 82 | 62 | 1,323 | 33 |
| 4 | Distillery FC Belfast | 26 | 15 | 2 | 9 | 71 | 58 | 1,224 | 32 |
| 5 | Coleraine FC | 26 | 13 | 4 | 9 | 63 | 53 | 1,189 | 30 |
| 6 | Ballymena FC | 26 | 10 | 8 | 8 | 64 | 54 | 1,185 | 28 |
| 7 | Bangor FC | 26 | 10 | 6 | 10 | 49 | 54 | 0,907 | 26 |
| 8 | Glenavon FC Lurgan | 26 | 8 | 8 | 10 | 61 | 63 | 0,968 | 24 |
| 9 | Ards FC Newtownards | 26 | 9 | 5 | 12 | 55 | 64 | 0,859 | 23 |
| 10 | Newry Town FC | 26 | 9 | 4 | 13 | 47 | 58 | 0,810 | 22 |
| 11 | Portadown FC | 26 | 10 | 2 | 14 | 52 | 76 | 0,684 | 22 |
| 12 | Larne FC | 26 | 8 | 4 | 14 | 51 | 72 | 0,708 | 20 |
| 13 | Cliftonville FC Belfast | 26 | 3 | 4 | 19 | 32 | 73 | 0,438 | 10 |
| 14 | Queen's Island FC Belfast | 26 | 2 | 3 | 21 | 53 | 130 | 0,408 | 7 |
| 364 | 153 | 58 | 153 | 884 | 884 | 364 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| Queen's Island FC Belfast not re-elected | |||||||||
| Admitted | Derry City FC Londonderry | ||||||||
| Belfast = Béal Feirste | Newtownards = Baile Nua na hArda | ||||||||
| Coleraine = Cúil Raithin | Newry = úr Cinn Trá | ||||||||
| Ballymena = Baile Lifin | Portadown = Port an Dúnáin | ||||||||
| Bangor = Beannchar | Larne = Latharna | ||||||||
| Lurgan = an Lorgain | |||||||||
| English = Irish | |||||||||
| CUP | |||||||||
| Semifinals | Belfast Celtic FC - Linfield FC Belfast | 3-0 | |||||||
| Ballymena FC - Coleraine FC | 3-0 | ||||||||
| Final (Belfast 30.05.1929) | Ballymena FC - Belfast Celtic FC | 2-1 | |||||||
| Belfast Celtic FC dissolved in 1960 | Queen's Island FC Belfast dissolved in 1960 | ||||||||
| CITY CUP | |||||||||
| (tournament played in league format) | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Linfield FAC Belfast | 13 | 11 | 1 | 1 | 44 | 16 | 2,750 | 23 |
| 2 | Ballymena FC | 13 | 10 | 1 | 2 | 48 | 19 | 2,526 | 21 |
| 3 | Glentoran FAC Belfast | 13 | 8 | 0 | 5 | 38 | 28 | 1,357 | 16 |
| 4 | Belfast Celtic FC | 13 | 6 | 3 | 4 | 31 | 21 | 1,476 | 15 |
| 5 | Glenavon FAC Lurgan | 13 | 6 | 3 | 4 | 32 | 29 | 1,103 | 15 |
| 6 | Ards FC Newtownards | 13 | 6 | 1 | 6 | 36 | 30 | 1,200 | 13 |
| 7 | Portadown FC | 13 | 5 | 3 | 5 | 28 | 28 | 1,000 | 13 |
| 8 | Larne FC | 13 | 5 | 2 | 6 | 28 | 33 | 0,848 | 12 |
| 9 | Distillery FC Belfast | 13 | 5 | 2 | 6 | 32 | 41 | 0,780 | 12 |
| 10 | Newry Town FC | 13 | 5 | 1 | 7 | 26 | 35 | 0,743 | 11 |
| 11 | Coleraine FC | 13 | 4 | 2 | 7 | 27 | 28 | 0,964 | 10 |
| 12 | Cliftonville FAC Belfast | 13 | 4 | 2 | 7 | 23 | 35 | 0,657 | 10 |
| 13 | Queen's Island FC Belfast | 13 | 2 | 2 | 9 | 28 | 44 | 0,636 | 6 |
| 14 | Bangor FC | 13 | 2 | 1 | 10 | 15 | 49 | 0,306 | 5 |
| 1 | |||||||||
| 182 | 79 | 25 | 79 | 436 | 436 | 182 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| NORTHERN IRELAND 1929-30 | |||||||||
| Irish League | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Linfield FC Belfast | 26 | 19 | 4 | 3 | 94 | 46 | 2,043 | 42 |
| 2 | Glentoran FC Belfast | 26 | 16 | 4 | 6 | 79 | 53 | 1,491 | 36 |
| 3 | Coleraine FC | 26 | 14 | 4 | 8 | 66 | 47 | 1,404 | 32 |
| 4 | Belfast Celtic FC | 26 | 13 | 4 | 9 | 68 | 57 | 1,193 | 30 |
| 5 | Ballymena FC | 26 | 13 | 3 | 10 | 65 | 46 | 1,413 | 29 |
| 6 | Bangor FC | 26 | 12 | 5 | 9 | 61 | 58 | 1,052 | 29 |
| 7 | Derry City FC Londonderry | 26 | 12 | 5 | 9 | 52 | 55 | 0,945 | 29 |
| 8 | Glenavon FC Lurgan | 26 | 12 | 3 | 11 | 70 | 63 | 1,111 | 27 |
| 9 | Distillery FC Belfast | 26 | 12 | 3 | 11 | 65 | 61 | 1,066 | 27 |
| 10 | Portadown FC | 26 | 7 | 7 | 12 | 68 | 90 | 0,756 | 21 |
| 11 | Newry Town FC | 26 | 9 | 1 | 16 | 51 | 66 | 0,773 | 19 |
| 12 | Ards FC Newtownards | 26 | 6 | 6 | 14 | 47 | 77 | 0,610 | 18 |
| 13 | Larne FC | 26 | 5 | 3 | 18 | 47 | 77 | 0,610 | 13 |
| 14 | Cliftonville FC Belfast | 26 | 5 | 2 | 19 | 40 | 77 | 0,519 | 12 |
| 364 | 155 | 54 | 155 | 873 | 873 | 364 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| Belfast = Béal Feirste | Lurgan = an Lorgain | ||||||||
| Coleraine = Cúil Raithin | Portadown = Port an Dúnáin | ||||||||
| Bangor = Beannchar | Newry = úr Cinn Trá | ||||||||
| Ballymena = Baile Lifin | Newtownards = Baile Nua na hArda | ||||||||
| Londonderry = Doire | Larne = Latharna | ||||||||
| English = Irish | |||||||||
| CUP | |||||||||
| Semifinals | Ballymena FC - Newry Town FC | 3-2 | |||||||
| Linfield FC Belfast - Glentoran FC Belfast | 2-1 | ||||||||
| Final (Belfast 29.03.1930) | Linfield FC Belfast - Ballymena FC | 4-3 | |||||||
| Belfast Celtic FC dissolved in 1960 | |||||||||
| CITY CUP | |||||||||
| (tournament played in league format) | |||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | ||
| 1 | Belfast Celtic FC | 13 | 9 | 2 | 2 | 32 | 12 | 2,667 | 20 |
| 2 | Glentoran FAC Belfast | 13 | 9 | 2 | 2 | 46 | 26 | 1,769 | 20 |
| 3 | Derry City FC Londonderry | 13 | 7 | 4 | 2 | 30 | 18 | 1,667 | 18 |
| 4 | Glenavon FAC Lurgan | 13 | 8 | 2 | 3 | 37 | 26 | 1,423 | 18 |
| 5 | Linfield FAC Belfast | 13 | 6 | 2 | 5 | 30 | 22 | 1,364 | 14 |
| 6 | Bangor FC | 13 | 6 | 2 | 5 | 30 | 29 | 1,034 | 14 |
| 7 | Ards FC Newtownards | 13 | 5 | 3 | 5 | 22 | 22 | 1,000 | 13 |
| 8 | Portadown FC | 13 | 6 | 1 | 6 | 25 | 27 | 0,926 | 13 |
| 9 | Distillery FC Belfast | 13 | 5 | 1 | 7 | 33 | 34 | 0,971 | 11 |
| 10 | Ballymena FC | 13 | 4 | 3 | 6 | 24 | 25 | 0,960 | 11 |
| 11 | Coleraine FC | 13 | 4 | 2 | 7 | 22 | 26 | 0,846 | 10 |
| 12 | Larne FC | 13 | 4 | 0 | 9 | 21 | 45 | 0,467 | 8 |
| 13 | Cliftonville FAC Belfast | 13 | 2 | 2 | 9 | 14 | 30 | 0,467 | 6 |
| 14 | Newry Town FC | 13 | 3 | 0 | 10 | 20 | 44 | 0,455 | 6 |
| 1 | |||||||||
| 182 | 78 | 27 | 78 | 386 | 386 | 182 | |||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average (play-off for relevant positions) | |||||||||
| Play-off (19.05.1930) | Belfast Celtic FC - Glentoran FAC Belfast | 3-1 | |||||||