| Héctor Thomas | |
| Fullname: | Héctor Thomas Martínez |
| Birth Date: | 1938 10, df=yes |
| Birth Place: | El Callao, Bolívar, Venezuela |
| Death Place: | Caracas, Distrito Capital, Venezuela |
| Height: | 178 cm |
| Weight: | 80 kg |
| Sport: | Athletics |
| Event: | Decathlon |
| Olympics: | 1960, 1964 |
| Show-Medals: | no |
Héctor Thomas Martínez (10 October 1938 – 23 December 2008) was a decathlete from Venezuela.
He won more than ten medals in various athletics events at the Bolivarian Games in 1961–1973, as well as three medals at the Pan American Games in 1963 and 1967. He competed in the decathlon at the 1960 and 1964 Olympics with the best result of 20th place in 1960. In 1998 he was inducted into the Venezuelan Sports Hall of Fame. He died of cancer aged 70.[1]