 |
| Surname | First name | Played | Points | Last team represented | Last appearance |
|---|
| O'Brien | Brian | 3 | 0 | Ireland | 24/02/1968 |
| O'Brien | Bryan | 2 | 0 | Ireland | 11/03/1893 |
| O'Brien | Des | 20 | 3 | Ireland | 29/03/1952 |
| O'Brien | Kevin | 2 +1 | 4 | Ireland | 06/06/1981 |
| O'Brien | Sean | 0 +3 | 0 | Ireland | 13/02/2010 |
| O'Brien-Butler | Pierce | 6 | 0 | Ireland | 03/02/1900 |
| O'Callaghan | Cyril | 7 | 6 | Ireland | 01/01/1912 |
| O'Callaghan | Donncha | 44 +19 | 5 | Ireland | 26/06/2010 |
| O'Callaghan | Michael | 3 | 0 | Ireland | 11/04/1964 |
| O'Callaghan | Philo | 21 | 0 | Ireland | 05/02/1977 |
| O'Connell | Ken | 1 +1 | 0 | Ireland | 05/03/1994 |
| O'Connell | Patrick | 6 | 0 | Ireland | 14/03/1914 |
| O'Connell | Paul | 65 +5 | 30 | Ireland | 20/03/2010 |
| O'Connell | William | 1 | 0 | Ireland | 22/01/1955 |
| O'Connor | Barry | 0 | 0 | Ireland | 21/11/1981 |
| O'Connor | Hubert | 4 | 0 | Ireland | 09/03/1957 |
| O'Connor | Jack | 1 | 0 | Ireland | 02/03/1895 |
| O'Connor | Jack | 1 | 3 | Ireland | 20/03/1909 |
| O'Connor | Jonny | 10 +2 | 5 | Ireland | 18/03/2006 |
| O'Connor | Joseph | 11 | 9 | Ireland | 26/02/1938 |
| O'Connor | Niall | 0 | 0 | Ireland | 31/05/2009 |
| O'Connor | P.J. | 1 | 0 | Ireland | 12/03/1887 |
| O'Conor | John | 17 | 0 | Ireland | 14/03/1896 |
| O'Cuinneagain | Dion | 16 +3 | 5 | Ireland | 04/03/2000 |
| O'Donnell | Rodney | 5 | 0 | Ireland | 15/03/1980 |
| O'Donoghue | Patrick | 11 | 0 | Ireland | 15/03/1958 |
| O'Driscoll | Barry | 3 +1 | 6 | Ireland | 13/03/1971 |
| O'Driscoll | Brian | 102 +1 | 215 | Ireland | 26/06/2010 |
| O'Driscoll | F.C.P. | 0 | 0 | Ireland | 14/02/1970 |
| O'Driscoll | John | 26 | 4 | Ireland | 03/03/1984 |
| O'Driscoll | Mick | 7 +12 | 0 | Ireland | 26/06/2010 |
| O'Flanagan | Kevin | 1 | 0 | Ireland | 06/12/1947 |
| O'Flanagan | Michael | 1 | 0 | Ireland | 28/02/1948 |
| O'Gara | Ronan | 79 +20 | 963 | Ireland | 26/06/2010 |
| O'Grady | Dylan | 1 | 0 | Ireland | 20/12/1997 |
| O'Hanlon | Bertie | 12 | 9 | Ireland | 28/01/1950 |
| O'Hara | Pat | 14 +1 | 4 | Ireland | 05/11/1994 |
| O'Kelly | Malcolm | 80 +12 | 40 | Ireland | 15/02/2009 |
| O'Leary | Archie | 3 | 0 | Ireland | 29/03/1952 |
| O'Leary | Tomas | 15 +3 | 10 | Ireland | 26/06/2010 |
| O'Loughlin | David | 6 | 3 | Ireland | 11/03/1939 |
| O'Mahony | Darragh | 4 | 5 | Ireland | 21/11/1998 |
| O'Mahony | David | 1 | 0 | Ireland | 06/05/1995 |
| O'Meara | Brian | 2 +7 | 0 | Ireland | 30/08/2003 |
| O'Meara | John | 22 | 6 | Ireland | 15/03/1958 |
| O'Neill | Boldy | 6 | 0 | Ireland | 09/01/1954 |
| O'Neill | Henry | 6 | 0 | Ireland | 01/04/1933 |
| O'Neill | James | 1 | 0 | Ireland | 28/02/1920 |
| O'Regan | K.A. | 0 | 0 | Ireland | 20/03/1982 |
| O'Reilly | Tony | 29 | 12 | Ireland | 14/02/1970 |
| O'Riordan | James | 0 | 0 | Ireland | 03/03/1990 |
| O'Shea | Conor | 34 +1 | 44 | Ireland | 05/02/2000 |
| O'Sullivan | Alexander | 1 | 0 | Ireland | 18/02/1882 |
| O'Sullivan | John | 2 | 0 | Ireland | 19/02/1887 |
| O'Sullivan | Patrick | 15 | 3 | Ireland | 07/12/1963 |
| O'Sullivan | William | 1 | 0 | Ireland | 02/03/1895 |
| Oakes | W.R. | 0 | 0 | Ireland | 16/02/1974 |
| Odbert | Reginald | 1 | 0 | Ireland | 28/01/1928 |
| Orr | Phil | 58 | 0 | Ireland | 07/06/1987 |
| Owens | Pussy | 2 | 0 | Ireland | 25/02/1922 |
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