| Bill Cassidy | |
| Fullname: | William Pitt Cassidy |
| Birth Date: | 4 October 1940 |
| Birth Place: | Hamilton, Scotland |
| Death Place: | Oxford, England |
| Position: | Left half, inside forward |
| Years1: | 195?–1958 |
| Clubs1: | Burnbank Swifts |
| Years2: | 1958 |
| Caps2: | 1 |
| Goals2: | 0 |
| Years3: | 1958 |
| Clubs3: | Coltness United |
| Years4: | 1958–1961 |
| Caps4: | 0 |
| Goals4: | 0 |
| Years5: | 1961–1962 |
| Caps5: | 25 |
| Goals5: | 1 |
| Years6: | 1962–1967 |
| Caps6: | 118 |
| Goals6: | 25 |
| Years7: | 1967–1968 |
| Clubs7: | Chelmsford City |
| Years8: | 1968 |
| Caps8: | 20 |
| Goals8: | 3 |
| Years9: | 1968–1971 |
| Clubs9: | Cambridge United |
| Caps9: | 31 |
| Goals9: | 6 |
| Years10: | 1971–1972 |
| Clubs10: | Kettering Town |
| Years11: | 1972–197? |
| Clubs11: | Ramsgate Athletic |
| Years12: | 1975–1977 |
| Clubs12: | Brora Rangers |
| Manageryears1: | 1977–1979 |
| Managerclubs1: | Ross County |
William Pitt Cassidy (4 October 1940 – 9 March 1995) was a Scottish professional football player and manager. He made 174 English Football League appearances playing for Rotherham United, Brighton & Hove Albion and Cambridge United. He also played one Scottish League match as a trialist for Hamilton Academical,[1] and spent the 1968 North American Soccer League season with the Detroit Cougars.[2] He also played junior football for Burnbank Swifts and Coltness United and English non-league football for Chelmsford City, Kettering Town and Ramsgate Athletic.[1] [3] He went on to act as player-coach of Highland League club Brora Rangers[4] and managed Ross County, also of the Highland League.[5]
Cassidy was born in Hamilton, South Lanarkshire, in 1940 and died in Oxford in 1995 at the age of 54.