| Code: | Hurling |
| Billy O'Neill | |
| Irish: | Liam Ó Néill |
| Birth Place: | Carrigtwohill, County Cork, Ireland |
| Birth Date: | 1929 |
| Death Place: | 2 January 2015[1] |
| Feet: | 5 |
| Inches: | 10 |
| Occupation: | Army officer |
| County: | Galway |
| Province: | Connacht |
| Clubs: | Carrigtwohill An Chéad Cath |
| Clcountyh: | 0 |
| Clcountyf: | 0 |
| Counties: | Cork Galway |
| Icpositionh: | Full-back |
| Icpositionf: | Left wing-forward |
| Icyears: | 1951 1952-1958 |
| Icprovincef: | 3 |
| Icprovinceh: | 0 |
| Icallirelandh: | 0 |
| Icallirelandf: | 1 |
| Nhl: | 0 |
| Nfl: | 1 |
| Icupdate: | 12:01, 13 August 2012 |
William O'Neill (1929 – 2 January 2015[2]) was an Irish Gaelic footballer and hurler who played in various positions for both the Cork and Galway senior teams.[3]
A dual player at the highest level, he joined the Cork panel in 1951 but later lined out with Galway until his retirement in 1958. He won one All-Ireland football medal, three Connacht football medals and one National Football League medal.[4]
At club level O'Neill played with Carrigtwohill in Cork and an Chéad Cath in Galway.