| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Iwao•Masuda |
| Used name | Iwao•Masuda |
| Original name | 増田•礒 |
| Born | 25 December 1914 in ?, Shizuoka (JPN) |
| Affiliations | Shizuoka Technical High School, Shizuoka (JPN) |
| NOC | Japan |
Iwao Masuda won the 400 metre title at the 1932 Japan Athletics Championships in 50 seconds flat, which earned him a place on the Japanese Olympic team, where he advanced only to round two. In the 4x400 metre relay, the Japanese team, including Masuda, placed fifth in the final.
Personal Best: 400 – 50.0 (1932).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1932 Summer Olympics | Athletics | JPN |
Iwao Masuda | |||
| 400 metres, Men (Olympic) | 6 h1 r2/4 | |||||
| 4 × 400 metres Relay, Men (Olympic) | Japan | 5 |