| Code: | Hurling |
| Sport: | Hurling |
| William O’Callaghan | |
| Irish: | Liam Ó Ceallacháin |
| Fullname: | William Henry O'Callaghan |
| Nickname: | Bill |
| Occupation: | Telegraph clerk |
| County: | Cork |
| Province: | Munster |
| Club: | Redmond's |
| Clposition: | Forward |
| Clcounty: | 1 |
| Counties: | Cork |
| Icposition: | Forward |
| Icyears: | 1892-1893 |
| Icapps(Points): | 2 |
| Icprovince: | 1 |
| Icallireland: | 1 |
| Icupdate: | 13:46, 3 May 2015 |
| Birth Date: | 1868 |
| Birth Place: | Cork, Ireland |
| Death Date: | 16 January 1946 (aged 77) |
| Death Place: | Dorset, England |
William Henry O’Callaghan (1868 – 16 January 1946) was an Irish hurler who played as a forward for the Cork senior team.
Born in Cork, O'Callaghan first arrived on the inter-county scene at the age of twenty-four when he first linked up with the Cork senior team. He made his senior debut during the 1892 championship. O'Callaghan immediately became a regular member of the team and won one All-Ireland medal and one Munster medal. In 1892 O'Callaghan captained the team to the All-Ireland title.[1] [2]
At club level O'Callaghan was a one-time championship medalist with Redmond's.
Throughout his career O'Callaghan made just two championship appearances. He retired from inter-county hurling following the conclusion of the 1893 championship.