Toshiharu Ai (阿井利治, Ai Toshiharu, born June 6, 1935 in Shizuoka Prefecture, Japan) is a former Japanese Nippon Professional Baseball catcher. He played for the Kokutetsu Swallows from 1954 to 1960.

Toshiharu Ai
Catcher
Born: (1935-06-06) June 6, 1935 (age 89)
Shizuoka Prefecture, Japan
Bats: Right
Throws: Right
Teams
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