Mitsuhiro Kitamiya (born November 27, 1988), better known by his ring name Masa Kitamiya, is a Japanese professional wrestler currently signed to Pro Wrestling NOAH, where he has become a nine-time GHC Tag Team Champion and won the 2025 N-1 Victory tournament. Prior to NOAH, he debuted in Japanese promotion Kensuke Office (later known as Diamond Ring), with his training handled by Kensuke Sasaki and Masa Saito, for whom his ring name and attire are tributes.