Yu Koshikawa (越川 優, Koshikawa Yū, born June 30, 1984) is a Japanese volleyball player who plays for Voreas Hokkaido in V.League Division 2.

In July 2009, Suntory Sunbirds announced that Koshikawa would move to Pallavolo Padova next season.

[3] In July 2012, Suntory Sunbirds announced Koshikawa would join the club in the next season.

[4]