| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Apolonio•Castillo Díaz | |
| Used name | Apolonio•Castillo | |
| Born | 23 May 1921 in Tecpán de Galeana, Guerrero |  MEX |
| Died | 11 March 1957 (aged 35 years 9 months 19 days) in Acapulco, Guerrero | MEX |
| Measurements | 175 cm / 75 kg | |
| NOC | Mexico | MEX |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1948 Summer Olympics | Swimming (Aquatics) | MEX |
Apolonio Castillo | |||
| 4 × 200 metres Freestyle Relay, Men (Olympic) | Mexico | 7 | ||||
| 200 metres Breaststroke, Men (Olympic) | 15 |
