| Roles | Competed in Olympic Games | 
|---|---|
| Sex | Male | 
| Full name | Guillermo•Martínez Ginoris | 
| Used name | Guillermo•Martínez Ginoris | 
| Born | 25 June 1943 in La Habana (Havana), Ciudad de La Habana (CUB) | 
| Died | 26 June 2021 | 
| Measurements | 182 cm / 95 kg | 
| Affiliations | Industriales | 
| NOC |   Cuba | 
Guillermo Martínez Ginoris was a member of the silver medal winning team at the 1971 Pan American Games.
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1968 Summer Olympics | Water Polo (Aquatics) |  CUB | 
Guillermo Martínez Ginoris | |||
| Water Polo, Men (Olympic) | Cuba | 8 | ||||
| 1972 Summer Olympics | Water Polo (Aquatics) |  CUB | 
Guillermo Martínez Ginoris | |||
| Water Polo, Men (Olympic) | Cuba | 9 |