Masaru Kato (加藤 大, Katō Masaru, born May 7, 1991) is a Japanese footballer who plays as a midfielder.
Born in Fukuoka, Kato signed for Albirex Niigata in September 2009, joining them from the Mitsubishi Yowa Academy. He made his debut on 11 September 2010 in the J. League match against Gamba Osaka at the Big Swan, which Albirex lost 1–2.
He has represented the Japan national team at numerous youth levels.