| Code: | Football |
| Sport: | Gaelic football |
| Bill Casey | |
| Irish: | Liam Ó Cathasaigh |
| Fullname: | Bill Casey |
| Birth Date: | 23 May 1918 |
| Death Date: | 3 March 1999 (aged 80) |
| Occupation: | Farmer |
| County: | Kerry |
| Province: | Munster |
| Club: | Dingle |
| Clyears: | 1930s-1950s |
| Clcounty: | 6 |
| Counties: | Kerry |
| Icposition: | Centre-back |
| Icyears: | 1938-1949 |
| Icapps(Points): | 29 (0-00) |
| Icprovince: | 5 |
| Icallireland: | 4 |
| Nfl: | 0 |
| Birth Place: | Lispole, County Kerry, Ireland |
| Death Place: | Lispole, County Kerry, Ireland |
William Robert Casey (23 May 1918 – 3 March 1999) was an Irish sportsperson. He played Gaelic football with his local club Dingle and later Lispole and was a member of the Kerry senior inter-county team from 1938 until 1949. His nephew Brian Mullins played with Dublin in the 1970s and 1980s winning 4 All Ireland titles. Both his sons Gearóid, Gabriel and Riobard played with Kerry at all levels.