Kazumasa Sasaki (佐々木一正; born December 11, 1989), is a Japanese professional ice hockey Defenceman currently playing for the Oji Eagles of the Asia League.

Since 2009 he plays for the Oji Eagles.

He previously played for the Östersund/Brunflo IF in the Hockeyettan, the third-tier league in Sweden.

He also has played for the Japan national team since the year 2012.

This Japanese biographical article relating to ice hockey is a stub.