| Pat Cash Sr. | |
| Fullname: | Patrick Cussen Cash[1] |
| Birth Date: | 5 September 1928 |
| Death Date: | [2] |
| Death Place: | Mitcham, Victoria |
| Originalteam: | University Blacks |
| Height: | 180 cm |
| Weight: | 80 kg |
| Position: | Forward |
| Statsend: | 1955 |
| Years1: | 1951–55 |
| Club1: | Hawthorn |
| Games Goals1: | 58 (75) |
Patrick Cussen Cash (5 September 1928 – 28 January 2008) was an Australian rules footballer from Victoria, who played with Hawthorn in the Victorian Football League (VFL).
Cash, a University Blacks recruit, was one of the main forward targets of a weak Hawthorn side in the 1950s. He kicked 26 goals in his debut season, which was enough to top Hawthorn's goal-kicking and included a five-goal haul in a win over Melbourne.
His son, of the same name, is a retired tennis player who won Wimbledon in 1987.