Seiichiro Kashio, Japanese tennis player (died 1962)

Seiichiro Kashio was a tennis player from Japan, and with Ichiya Kumagae was one of the first Japanese Olympic medalists. He won the 1919 Canadian Open by defeating United States player Walter Wesbrook 3–6, 6–3, 6–1, 11–9.

January 2 is the second day of the year in the Gregorian calendar; 363 days remain until the end of the year.