| Pat Cahill | |
| Fullname: | Patrick Thomas Cahill |
| Birth Date: | 25 July 1919 |
| Birth Place: | Midland, Western Australia |
| Death Place: | Heidelberg, Victoria |
| Originalteam: | Williamstown |
| Height: | 188 cm |
| Weight: | 83 kg |
| Position: | Ruck / Defence |
| Statsend: | 1948 |
| Years1: | 1939–41, 1943–44, 1946–47 |
| Games Goals1: | 47 (19) |
| Years2: | 1948 |
| Games Goals2: | 3 (2) |
| Games Goalstotal: | 50 (21) |
Patrick Thomas Cahill (25 July 1919 – 24 November 1966) was an Australian rules footballer who played with Footscray and St Kilda in the Victorian Football League (VFL).[1] Prior to playing with Footscray, the 18yo Cahill spent the 1938 season with Williamstown in the VFA, where he played 11 games and kicked 6 goals and was awarded the best first-year player trophy. After playing in round one of the 1939 season, Cahill crossed to Footscray without a clearance. He was the younger brother of Ted Cahill, who had also played for Footscray in 1927-28 and Williamstown 1929-34.