| IRELAND 1920-1921 | ||||||||||
| Leinster Senior League | ||||||||||
| 1 | Shelbourne United FC Dublin | |||||||||
| Saint James's Gate FC Dublin | ||||||||||
| Bohemian FC Dublin | ||||||||||
| Olympia FC Dublin | ||||||||||
| Jacobs AFC Dublin | ||||||||||
| Frankfort FC Dublin | ||||||||||
| Dublin United FC | ||||||||||
| YMCA Dublin | ||||||||||
| Leinster Senior Cup | ||||||||||
| Final | Dublin United FC - Saint James's Gate FC Dublin | 1-0 | ||||||||
| IRISH FREE STATE 1921-1922 | ||||||||||
| League of Ireland | ||||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | |||
| 1 | Saint James's Gate FC Dublin (Crumlin) | 14 | 11 | 1 | 2 | 31 | 8 | 3,875 | 23 | |
| 2 | Bohemian FC Dublin (Phibsborough) | 14 | 10 | 1 | 3 | 35 | 13 | 2,692 | 21 | |
| 3 | Shelbourne AFC Dublin (Ringsend) | 14 | 8 | 2 | 4 | 31 | 21 | 1,476 | 18 | |
| 4 | Olympia FC Dublin (Inchicore) | 14 | 5 | 4 | 5 | 20 | 21 | 0,952 | 14 | |
| 5 | Jacobs AFC Dublin (Crumlin) | 14 | 4 | 4 | 6 | 23 | 27 | 0,852 | 12 | |
| 6 | Frankfort FC Dublin (Drumcondra) | 14 | 3 | 5 | 6 | 22 | 32 | 0,688 | 11 | |
| 7 | Dublin United FC (Donnybrook) | 14 | 5 | 0 | 9 | 25 | 39 | 0,641 | 10 | |
| 8 | YMCA Dublin (Sandymount) | 14 | 0 | 3 | 11 | 17 | 43 | 0,395 | 3 | |
| 112 | 46 | 20 | 46 | 204 | 204 | 112 | ||||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average | ||||||||||
| Frankfort FC Dublin and YMCA Dublin not re-elected | ||||||||||
| Admitted | Shamrock Rovers AFC Dublin, Shelbourne United FC Dublin, Athlone Town AFC, Pioneers FC | |||||||||
| Dublin, Midland Athletic FC Dublin, Rathmines FC Dublin | ||||||||||
| Dublin = Baile Átha Cliath | ||||||||||
| English = Irish | ||||||||||
| CUP | ||||||||||
| Semifinals | Saint James's Gate FC Dublin - Shelbourne AFC Dublin | 0-0 | 2-1 | |||||||
| Shamrock Rovers AFC Dublin - Bohemian FC Dublin | 1-0 | |||||||||
| Final (Dublin 17.03.1922 and 08.04.1922) | Saint James's Gate FC Dublin - Shamrock Rovers AFC Dublin | 1-1 | 1-0 | |||||||
| Olympia FC Dublin dissolved in 1924 | Dublin United FC dissolved in 1925 | |||||||||
| Jacobs AFC Dublin dissolved in 1969 | YMCA Dublin dissolved in ??? | |||||||||
| IRISH FREE STATE 1922-23 | ||||||||||
| League of Ireland | ||||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | |||
| 1 | Shamrock Rovers AFC Dublin (Milltown) | 22 | 18 | 3 | 1 | 77 | 19 | 4,053 | 39 | |
| 2 | Shelbourne AFC Dublin (Ringsend) | 22 | 15 | 4 | 3 | 72 | 14 | 5,143 | 34 | |
| 3 | Bohemian FC Dublin (Phibsborough) | 22 | 14 | 4 | 4 | 72 | 23 | 3,130 | 32 | |
| 4 | Shelbourne United FC Dublin (Donnybrook) | 22 | 12 | 3 | 7 | 43 | 37 | 1,162 | 27 | |
| 5 | Saint James's Gate FC Dublin (Crumlin) | 22 | 11 | 3 | 8 | 49 | 35 | 1,400 | 25 | |
| 6 | Athlone Town AFC | 22 | 11 | 3 | 8 | 46 | 33 | 1,394 | 25 | |
| 7 | Jacobs AFC Dublin (Crumlin) | 22 | 6 | 8 | 8 | 38 | 34 | 1,118 | 20 | |
| 8 | Pioneers FC Dublin (Clontarf) | 22 | 8 | 3 | 11 | 38 | 65 | 0,585 | 19 | |
| 9 | Midland Athletic FC Dublin (Whitehall) | 22 | 7 | 2 | 13 | 30 | 68 | 0,441 | 16 | |
| 10 | Dublin United FC (Donnybrook) | 22 | 4 | 3 | 15 | 30 | 70 | 0,429 | 11 | |
| 11 | Olympia FC Dublin (Inchicore) | 22 | 2 | 7 | 13 | 13 | 57 | 0,228 | 11 | |
| 12 | Rathmines Athletic FC Dublin (Rathminers) | 22 | 2 | 1 | 19 | 21 | 74 | 0,284 | 5 | |
| 264 | 110 | 44 | 110 | 529 | 529 | 264 | ||||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average | ||||||||||
| Olympia FC Dublin, Dublin United FC and Rathmines Athletic FC Dublin not re-elected | ||||||||||
| Admitted | Brooklyn FC Dublin | |||||||||
| Dublin = Baile Átha Cliath | Athlone = Baile Átha Luain | |||||||||
| English = Irish | ||||||||||
| CUP | ||||||||||
| Semifinals | Alton United FC Belfast - Forsdons FC Cork | 4-2 | ||||||||
| Shelbourne AFC Dublin - Jacobs AFC Dublin | 2-0 | |||||||||
| Final (Dublin 17.03.1923) | Alton United FC Belfast - Shelbourne AFC Dublin | 1-0 | ||||||||
| Belfast = Béal Feirste (NIR) | ||||||||||
| English = Irish | ||||||||||
| Shelbourne United FC Dublin dissolved in 1924 | Dublin United FC dissolved in 1925 | |||||||||
| Jacobs AFC Dublin dissolved in 1969 | Olympia FC Dublin dissolved in 1924 | |||||||||
| Midland Athletic FC Dublin dissolved in 1925 | Rathmines Athletic FC Dublin dissolved in 1923 | |||||||||
| Alton United FC Belfast dissolved in 1924 | Forsdons FC Cork dissolved in 1938 | |||||||||
| IRISH FREE STATE 1923-24 | ||||||||||
| League of Ireland | ||||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | |||
| 1 | Bohemian FC Dublin (Phibsborough) | 18 | 16 | 0 | 2 | 56 | 20 | 2,800 | 32 | |
| 2 | Shelbourne AFC Dublin (Ringsend) | 18 | 13 | 2 | 3 | 55 | 21 | 2,619 | 28 | |
| 3 | Jacobs AFC Dublin (Crumlin) | 18 | 11 | 2 | 5 | 36 | 21 | 1,714 | 24 | |
| 4 | Athlone Town AFC | 18 | 8 | 5 | 5 | 34 | 24 | 1,417 | 21 | |
| 5 | Saint James's Gate FC Dublin (Crumlin) | 18 | 9 | 2 | 7 | 38 | 27 | 1,407 | 20 | |
| 6 | Shelbourne United FC Dublin (Donnybrook) | 18 | 8 | 3 | 7 | 30 | 31 | 0,968 | 19 | |
| 7 | Shamrock Rovers AFC Dublin (Milltown) | 18 | 7 | 3 | 8 | 35 | 32 | 1,094 | 17 | |
| 8 | Brooklyn FC Dublin (Merchants Quay) | 18 | 4 | 2 | 12 | 23 | 37 | 0,622 | 10 | |
| 9 | Pioneers FC Dublin (Whitehall) | 18 | 2 | 1 | 15 | 15 | 60 | 0,250 | 5 | |
| 10 | Midland Athletic FC Dublin (Whitehall) | 18 | 2 | 0 | 16 | 13 | 62 | 0,210 | 4 | |
| 180 | 80 | 20 | 80 | 335 | 335 | 180 | ||||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average | ||||||||||
| Shelbourne United FC Dublin resigned | ||||||||||
| Midland Athletic FC Dublin not re-elected | ||||||||||
| Admitted | Forsdons FC Cork, Bray Unknowns FC | |||||||||
| Dublin = Baile Átha Cliath | Athlone = Baile Átha Luain | |||||||||
| English = Irish | ||||||||||
| CUP | ||||||||||
| Semifinals | Bohemian FC Dublin - Athlone Town AFC | 0-0 | 0-2 | |||||||
| Forsdons FC Cork - Saint James's Gate FC Dublin | 4-0 | |||||||||
| Final (Dublin 17.03.1924) | Athlone Town AFC - Forsdons FC Cork | 1-0 | ||||||||
| Jacobs AFC Dublin dissolved in 1969 | Midland Athletic FC Dublin dissolved in 1925 | |||||||||
| Shelbourne United FC Dublin dissolved in 1924 | Forsdons FC Cork dissolved in 1938 | |||||||||
| Brooklyn FC Dublin dissolved in 1925 | ||||||||||
| IRISH FREE STATE 1924-25 | ||||||||||
| League of Ireland | ||||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | |||
| 1 | Shamrock Rovers AFC Dublin (Milltown) | 18 | 13 | 5 | 0 | 67 | 12 | 5,583 | 31 | |
| 2 | Bohemian FC Dublin (Phibsborough) | 18 | 11 | 6 | 1 | 40 | 11 | 3,636 | 28 | |
| 3 | Shelbourne AFC Dublin (Ringsend) | 18 | 12 | 3 | 3 | 55 | 20 | 2,750 | 27 | |
| 4 | Fordsons FC Cork | 18 | 10 | 1 | 7 | 35 | 32 | 1,094 | 21 | |
| 5 | Jacobs AFC Dublin (Crumlin) | 18 | 8 | 1 | 9 | 36 | 35 | 1,029 | 17 | |
| 6 | Saint James's Gate FC Dublin (Crumlin) | 18 | 5 | 7 | 6 | 30 | 36 | 0,833 | 17 | |
| 7 | Athlone Town AFC | 18 | 5 | 4 | 9 | 15 | 32 | 0,469 | 14 | |
| 8 | Brooklyn FC Dublin (Merchants Quay) | 18 | 4 | 3 | 11 | 24 | 57 | 0,421 | 11 | |
| 9 | Bray Unknowns FC | 18 | 3 | 3 | 12 | 21 | 44 | 0,477 | 9 | |
| 10 | Pioneers FC Dublin (Whitehall) | 18 | 2 | 1 | 15 | 21 | 65 | 0,323 | 5 | |
| 180 | 73 | 34 | 73 | 344 | 344 | 180 | ||||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average | ||||||||||
| Brooklyn FC Dublin not re-elected | ||||||||||
| Admitted | Brideville FC Dublin | |||||||||
| Dublin = Baile Átha Cliath | Bray = Bré (Brí Chualann) | |||||||||
| Athlone = Baile Átha Luain | Cork = Corcaigh | |||||||||
| English = Irish | ||||||||||
| CUP | ||||||||||
| Semifinals | Shelbourne AFC Dublin - Athlone Town AFC | 4-0 | ||||||||
| Shamrock Rovers AFC Dublin - Bray Unknowns FC | 2-1 | |||||||||
| Final (Dublin 17.03.1925) | Shamrock Rovers AFC Dublin - Shelbourne AFC Dublin | 2-1 | ||||||||
| Forsdons FC Cork dissolved in 1938 | Bray Unknowns FC dissolved in 1973 | |||||||||
| Jacobs AFC Dublin dissolved in 1969 | Brooklyn FC Dublin dissolved in 1925 | |||||||||
| IRISH FREE STATE 1925-26 | ||||||||||
| League of Ireland | ||||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | |||
| 1 | Shelbourne AFC Dublin (Ringsend) | 18 | 14 | 3 | 1 | 65 | 23 | 2,826 | 31 | |
| 2 | Shamrock Rovers AFC Dublin (Milltown) | 18 | 13 | 3 | 2 | 62 | 21 | 2,952 | 29 | |
| 3 | Fordsons FC Cork | 18 | 12 | 1 | 5 | 58 | 31 | 1,871 | 27 | |
| 4 | Bohemian FC Dublin (Phibsborough) | 18 | 10 | 2 | 6 | 50 | 28 | 1,786 | 20 | |
| 5 | Jacobs AFC Dublin (Crumlin) | 18 | 7 | 4 | 7 | 40 | 48 | 0,833 | 18 | |
| 6 | Brideville FC Dublin (The Liberties) | 18 | 6 | 4 | 8 | 36 | 53 | 0,679 | 16 | |
| 7 | Athlone Town AFC | 18 | 7 | 1 | 10 | 46 | 56 | 0,821 | 15 | |
| 8 | Saint James's Gate FC Dublin (Crumlin) | 18 | 4 | 3 | 11 | 33 | 48 | 0,688 | 11 | |
| 9 | Bray Unknowns FC | 18 | 4 | 3 | 11 | 34 | 55 | 0,618 | 11 | |
| 10 | Pioneers FC Dublin (Whitehall) | 18 | 1 | 0 | 17 | 21 | 82 | 0,256 | 2 | |
| 180 | 78 | 24 | 78 | 445 | 445 | 180 | ||||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average | ||||||||||
| Pioneers FC Dublin not re-elected | ||||||||||
| 2 points trensferred from Bohemians FC to Fordsons FC | ||||||||||
| Admitted | Dundalk GNR FC | |||||||||
| Dublin = Baile Átha Cliath | Bray = Bré (Brí Chualann) | |||||||||
| Athlone = Baile Átha Luain | Cork = Corcaigh | |||||||||
| English = Irish | ||||||||||
| CUP | ||||||||||
| Semifinals | Shamrock Rovers AFC Dublin - Jacobs AFC Dublin | 0-0 | 3-0 | |||||||
| Fordsons FC Cork - Bray Unknowns FC | 4-1 | |||||||||
| Final (Dublin 17.03.1926) | Fordsons FC Cork - Shamrock Rovers AFC Dublin | 3-2 | ||||||||
| Forsdons FC Cork dissolved in 1938 | Brideville FC Dublin dissolved in 1946 | |||||||||
| Jacobs AFC Dublin dissolved in 1969 | Bray Unknowns FC dissolved in 1973 | |||||||||
| IRISH FREE STATE 1926-27 | ||||||||||
| League of Ireland | ||||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | |||
| 1 | Shamrock Rovers AFC Dublin (Milltown) | 18 | 14 | 4 | 0 | 60 | 20 | 3,000 | 32 | |
| 2 | Shelbourne AFC Dublin (Ringsend) | 18 | 13 | 3 | 2 | 63 | 23 | 2,739 | 29 | |
| 3 | Bohemian FC Dublin (Phibsborough) | 18 | 10 | 5 | 3 | 36 | 24 | 1,500 | 25 | |
| 4 | Fordsons FC Cork | 18 | 7 | 3 | 8 | 36 | 37 | 0,973 | 17 | |
| 5 | Athlone Town AFC | 18 | 6 | 5 | 7 | 41 | 43 | 0,953 | 17 | |
| 6 | Bray Unknowns FC | 18 | 6 | 1 | 11 | 37 | 58 | 0,638 | 13 | |
| 7 | Jacobs AFC Dublin (Crumlin) | 18 | 5 | 3 | 10 | 23 | 47 | 0,489 | 13 | |
| 8 | Dundalk GNR FC | 18 | 3 | 6 | 9 | 30 | 40 | 0,750 | 12 | |
| 9 | Saint James's Gate FC Dublin (Crumlin) | 18 | 5 | 2 | 11 | 30 | 47 | 0,638 | 12 | |
| 10 | Brideville FC Dublin (The Liberties) | 18 | 2 | 6 | 10 | 22 | 39 | 0,564 | 10 | |
| 180 | 71 | 38 | 71 | 378 | 378 | 180 | ||||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average | ||||||||||
| GNR = Great Northern Railway | ||||||||||
| Dublin = Baile Átha Cliath | Bray = Bré (Brí Chualann) | |||||||||
| Athlone = Baile Átha Luain | Dundalk = Dún Dealgan | |||||||||
| Cork = Corcaigh | ||||||||||
| English = Irish | ||||||||||
| CUP | ||||||||||
| Semifinals | Brideville FC Dublin - Shelbourne AFC Dublin | 2-0 | ||||||||
| Drumcondra AFC Dublin - Bohemian FC Dublin | 3-1 | |||||||||
| Final (Dublin 17.03.1927 and 09.04.1927) | Drumcondra AFC Dublin - Brideville FC Dublin | 1-1 | 1-0 | |||||||
| Forsdons FC Cork dissolved in 1938 | Jacobs AFC Dublin dissolved in 1969 | |||||||||
| Bray Unknowns FC dissolved in 1973 | Brideville FC Dublin dissolved in 1946 | |||||||||
| IRISH FREE STATE 1927-28 | ||||||||||
| League of Ireland | ||||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | |||
| 1 | Bohemian FC Dublin (Phibsborough) | 18 | 15 | 1 | 2 | 53 | 20 | 2,650 | 31 | |
| 2 | Shelbourne AFC Dublin (Ringsend) | 18 | 13 | 2 | 3 | 67 | 24 | 2,792 | 28 | |
| 3 | Shamrock Rovers AFC Dublin (Milltown) | 18 | 9 | 7 | 2 | 42 | 18 | 2,333 | 25 | |
| 4 | Fordsons FC Cork | 18 | 9 | 4 | 5 | 46 | 34 | 1,353 | 22 | |
| 5 | Dundalk GNR FC | 18 | 9 | 3 | 6 | 44 | 36 | 1,222 | 21 | |
| 6 | Brideville FC Dublin (The Liberties) | 18 | 7 | 5 | 6 | 37 | 33 | 1,121 | 19 | |
| 7 | Saint James's Gate FC Dublin (Crumlin) | 18 | 5 | 4 | 9 | 28 | 42 | 0,667 | 14 | |
| 8 | Jacobs AFC Dublin (Crumlin) | 18 | 2 | 5 | 11 | 20 | 47 | 0,426 | 9 | |
| 9 | Bray Unknowns FC | 18 | 1 | 4 | 13 | 29 | 70 | 0,414 | 6 | |
| 10 | Athlone Town AFC | 18 | 2 | 1 | 15 | 19 | 61 | 0,311 | 5 | |
| 180 | 72 | 36 | 72 | 385 | 385 | 180 | ||||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average | ||||||||||
| Athlone Town AFC not re-elected | ||||||||||
| Admitted | Drumcondra AFC Dublin | |||||||||
| GNR = Great Northern Railway | ||||||||||
| Dublin = Baile Átha Cliath | Bray = Bré (Brí Chualann) | |||||||||
| Dundalk = Dún Dealgan | Athlone = Baile Átha Luain | |||||||||
| Cork = Corcaigh | ||||||||||
| English = Irish | ||||||||||
| CUP | ||||||||||
| Semifinals | Bohemian FC Dublin - Shelbourne AFC Dublin | 1-1 | 0-0 | 4-1 | ||||||
| Fordsons FC Cork - Drumcondra AFC Dublin | 0-3 | |||||||||
| Final (Dublin 17.03.1928) | Bohemian FC Dublin - Drumcondra AFC Dublin | 2-1 | ||||||||
| Forsdons FC Cork dissolved in 1938 | Jacobs AFC Dublin dissolved in 1969 | |||||||||
| Brideville FC Dublin dissolved in 1946 | Bray Unknowns FC dissolved in 1973 | |||||||||
| IRISH FREE STATE 1928-29 | ||||||||||
| League of Ireland | ||||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | |||
| 1 | Shelbourne AFC Dublin (Ringsend) | 18 | 16 | 1 | 1 | 49 | 12 | 4,083 | 33 | |
| 2 | Bohemian FC Dublin (Phibsborough) | 18 | 15 | 2 | 1 | 61 | 23 | 2,652 | 32 | |
| 3 | Shamrock Rovers AFC Dublin (Milltown) | 18 | 10 | 4 | 4 | 58 | 28 | 2,071 | 24 | |
| 4 | Drumcondra AFC Dublin (Clonturk) | 18 | 7 | 4 | 7 | 28 | 31 | 0,903 | 18 | |
| 5 | Dundalk GNR FC | 18 | 7 | 3 | 8 | 43 | 44 | 0,977 | 17 | |
| 6 | Saint James's Gate FC Dublin (Crumlin) | 18 | 5 | 4 | 9 | 37 | 44 | 0,841 | 14 | |
| 7 | Fordsons FC Cork | 18 | 5 | 3 | 10 | 27 | 36 | 0,750 | 13 | |
| 8 | Brideville FC Dublin (The Liberties) | 18 | 4 | 3 | 11 | 28 | 57 | 0,491 | 11 | |
| 9 | Jacobs AFC Dublin (Crumlin) | 18 | 2 | 6 | 10 | 26 | 48 | 0,542 | 10 | |
| 10 | Bray Unknowns FC | 18 | 2 | 4 | 12 | 24 | 58 | 0,414 | 8 | |
| 180 | 73 | 34 | 73 | 381 | 381 | 180 | ||||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average | ||||||||||
| GNR = Great Northern Railway | ||||||||||
| Dublin = Baile Átha Cliath | Bray = Bré (Brí Chualann) | |||||||||
| Dundalk = Dún Dealgan | Cork = Corcaigh | |||||||||
| English = Irish | ||||||||||
| CUP | ||||||||||
| Semifinals | Shamrock Rovers AFC Dublin - Dundalk GNR FC | 3-0 | ||||||||
| Bohemian FC Dublin - Drumcondra AFC Dublin | 2-0 | |||||||||
| Final (Dublin 18.03.1929 and 06.04.1929) | Shamrock Rovers AFC Dublin - Bohemian FC Dublin | 0-0 | 3-0 | |||||||
| Forsdons FC Cork dissolved in 1938 | Brideville FC Dublin dissolved in 1946 | |||||||||
| Jacobs AFC Dublin dissolved in 1969 | Bray Unknowns FC dissolved in 1973 | |||||||||
| IRISH FREE STATE 1929-30 | ||||||||||
| League of Ireland | ||||||||||
| Played | Won | Drew | Lost | For | Against | G/Av | Points | |||
| 1 | Bohemian FC Dublin (Phibsborough) | 18 | 14 | 2 | 2 | 51 | 18 | 2,833 | 30 | |
| 2 | Shelbourne AFC Dublin (Ringsend) | 18 | 14 | 1 | 3 | 59 | 25 | 2,360 | 29 | |
| 3 | Shamrock Rovers AFC Dublin (Milltown) | 18 | 12 | 2 | 4 | 44 | 22 | 2,000 | 26 | |
| 4 | Fordsons FC Cork | 18 | 8 | 3 | 7 | 33 | 33 | 1,000 | 19 | |
| 5 | Brideville FC Dublin (The Liberties) | 18 | 8 | 3 | 7 | 34 | 39 | 0,872 | 19 | |
| 6 | Dundalk GNR FC | 18 | 6 | 3 | 9 | 38 | 36 | 1,056 | 15 | |
| 7 | Drumcondra AFC Dublin (Clonturk) | 18 | 5 | 5 | 8 | 26 | 37 | 0,703 | 15 | |
| 8 | Bray Unknowns FC | 18 | 4 | 5 | 9 | 34 | 48 | 0,708 | 13 | |
| 9 | Saint James's Gate FC Dublin (Crumlin) | 18 | 4 | 3 | 11 | 30 | 38 | 0,789 | 11 | |
| 10 | Jacobs AFC Dublin (Crumlin) | 18 | 0 | 3 | 15 | 23 | 76 | 0,303 | 3 | |
| 180 | 75 | 30 | 75 | 372 | 372 | 180 | ||||
| Rules for classification: 1) Points (win 2 points, draw 1 point); 2) Goal average | ||||||||||
| Fordsons FC Cork => Cork FC | ||||||||||
| Admitted | Dolphin AFC Dublin, Waterford AFC | |||||||||
| GNR = Great Northern Railway | ||||||||||
| Dublin = Baile Átha Cliath | Bray = Bré (Brí Chualann) | |||||||||
| Dundalk = Dún Dealgan | Cork = Corcaigh | |||||||||
| English = Irish | ||||||||||
| CUP | ||||||||||
| Semifinals | Brideville FC Dublin - Dundalk GNR FC | 2-1 | ||||||||
| Fordsons FC Cork - Shamrock Rovers AFC Dublin | 2-2 | 0-3 | ||||||||
| Final (Dublin 17.03.1930) | Shamrock Rovers AFC Dublin - Brideville FC Dublin | 1-0 | ||||||||
| Forsdons FC Cork dissolved in 1938 | Bray Unknowns FC dissolved in 1973 | |||||||||
| Brideville FC Dublin dissolved in 1946 | Jacobs AFC Dublin dissolved in 1969 | |||||||||