Yuya Saito (斉藤 祐也, Saitō Yūya, born 28 April 1977) is a Japanese rugby union player.

He's a regular at Japan national rugby union team, having played at the 2003 Rugby World Cup finals.

15) for the first time for the Steelers versus Suntory in a game on Christmas Day 2004.

He married former Olympic gold medalist swimmer Kyoko Iwasaki.

This Japanese rugby union biography is a stub.