| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Nobuo•Arai |
| Used name | Nobuo•Arai |
| Original name | 新井•信男 |
| Born | 1909 |
| Died | 15 June 1990 |
| Affiliations | Waseda University, Tokyo (JPN) |
| NOC | Japan |
| Medals | OG |
| Gold | 0 |
| Silver | 1 |
| Bronze | 0 |
| Total | 1 |
Nobuo Arai was a three-time Japanese Champion in the 1500 m freestyle, from the first holding in 1925 until 1927. In 1927 he also won the national title in the 400 m freestyle.
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1928 Summer Olympics | Swimming (Aquatics) | JPN |
Nobuo Arai | |||
| 400 metres Freestyle, Men (Olympic) | 2 h1 r1/3 | |||||
| 1,500 metres Freestyle, Men (Olympic) | 4 h1 r2/3 | |||||
| 4 × 200 metres Freestyle Relay, Men (Olympic) | Japan | 2 | Silver |
Year of birth also seen as 1910.