Masakatsu (written: 正勝, 正克, 傑將, 優治, 征勝, 将勝, 昌克, 昌勝, 必勝 or 政勝) is a masculine Japanese given name. Notable people with the name include:
Abe Masakatsu (阿部 正勝) (1541–1600), Japanese samuraiMasakatsu Aoki (青木 昌勝) (born 1957), Japanese astronomerMasakatsu Funaki (船木 優治) (born 1969), Japanese mixed martial artist and professional wrestlerMasakatsu G. Fujie (藤江 正克) (born 1945), Japanese academicHachisuka Masakatsu (蜂須賀 正勝) (1526–1586), Japanese daimyōInaba Masakatsu (稲葉 正勝) (1597–1634), Japanese daimyōMasakatsu Iwamoto, Japanese artistMasakatsu Koike (小池 正勝) (born 1952), Japanese politicianKotozakura Masakatsu (琴櫻 傑將) (1940–2007), Japanese sumo wrestlerMasakatsu Miyamoto (宮本 征勝) (1938–2002), Japanese footballer and managerMasakatsu Morita (森田 必勝) (1945–1970), Japanese activistMasakatsu Sawa (澤 昌克) (born 1983), Japanese footballerMasakatsu Shibasaki (柴崎 正勝) (born 1947), Japanese chemistTakagi Masakatsu (高木 正勝) (born 1979), Japanese musicianMasakatsu Ueda (上田 将勝) (born 1977), Japanese mixed martial artistUemura Masakatsu (植村 正勝) (1535–1592), Japanese samuraiYūki Masakatsu (結城 政勝) (1503–1559), Japanese samurai