| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Mariano S.•Niñonuevo | |
| Used name | Mariano•Niñonuevo | |
| Born | 15 August 1921 in Caloocan, Manila |  PHI |
| Died | 7 May 1993 (aged 71 years 8 months 23 days) | |
| Measurements | 168 cm / 64 kg | |
| NOC | Philippines | PHI |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1964 Summer Olympics | Shooting | PHI |
Mariano Niñonuevo | |||
| Free Pistol, Men (Olympic) | 48 |
