Nobuo Arai (新井 信男) (1909 – June 15, 1990) was a Japanese swimmer who competed at the 1928 Summer Olympics in Amsterdam. Arai was a member of the Japanese team which won the silver medal for the 4 × 200 meter freestyle relay event at the 1928 Amsterdam Olympics. He placed fourth in the semifinal of the 1500 meter freestyle event, but did not advance to the finals. He also qualified for the semifinals of the 400 meter freestyle event, but did not start.

Nobuo Arai
Arai nobuo 1928.jpg
Personal information
DiedJune 15, 1990
Medal record

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