Kazuhiro "Daimajin" Sasaki (??? ?? Sasaki Kazuhiro, born February 22, 1968 in Sendai City, Japan) is a former Nippon Professional Baseball and Major League Baseball right-handed relief pitcher.
He played his entire NPB career with the Yokohama Taiyo Whales / Yokohama BayStars (1990–1999; 2004–2005).
Sasaki played his entire MLB career with the Seattle Mariners (2000–2003).