| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Masami•Kubota |
| Used name | Masami•Kubota |
| Original name | 久保田•正躬 |
| Born | 6 December 1931 in Okayama, Okayama (JPN) |
| NOC |  Japan |
| Medals | OG |
| Gold | 0 |
| Silver | 2 |
| Bronze | 1 |
| Total | 3 |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1956 Summer Olympics | Artistic Gymnastics (Gymnastics) | JPN |
Masami Kubota | |||
| All-Around, Individual, Men (Olympic) | =8 | |||||
| Team, Men (Olympic) | Japan | 2 | Silver | |||
| Floor Exercise, Men (Olympic) | =10 | |||||
| Vault, Men (Olympic) | =33 | |||||
| Parallel Bars, Men (Olympic) | 2 | Silver | ||||
| Horizontal Bar, Men (Olympic) | =25 | |||||
| Rings, Men (Olympic) | =3 | Bronze | ||||
| Pommel Horse, Men (Olympic) | =16 |
