| Geoff Thomas | |
| Australianopenresult: | SF (1913) |
| Australianopendoublesresult: | SF (1910) |
Geoff Thomas was an Australian tennis player who found success in the early 1900s.
He reached the semifinals of the 1913 Australasian Championships. In doubles, Thomas reached the semi-finals of the 1910 Australasian Championships (partnering V. Rudder).