Masaharu (written: 雅治, 雅晴, 雅春, 正治, 正春, 匡治, 政治, 政晴, 誠春 or 昌晴) is a masculine Japanese given name. Notable people with the name include:
Masaharu Anesaki (姉崎 正治) (1873–1949), Japanese writerMasaharu Fukuyama (福山 雅治) (born 1969), Japanese singer-songwriter, musician and actorMasaharu Homma (本間 雅晴) (1887–1946), Japanese generalMasaharu Ikuta (生田 正治) (born 1935), Japanese businessmanInoue Masaharu (井上 正春) (1805–1847), Japanese daimyōMasaharu Iwata (岩田 匡治) (born 1966), Japanese video game composerMasaharu Kono (河野 雅治), Japanese diplomatMasaharu Matsushita (松下 正治) (c. 1913 – 2012), Japanese businessmanMasaharu Morimoto (森本 正治) (born 1955), Japanese chefMasaharu Nagashima (長島 正治) (1929–2010), Japanese dermatologistMasaharu Nakagawa (House of Councillors) (中川 雅治) (born 1947), Japanese politicianMasaharu Nakagawa (House of Representatives) (中川 正春) (born 1950), Japanese politicianMasaharu Nishi (西 政治) (born 1977), Japanese footballerMasaharu Satō (佐藤 正治) (born 1946), Japanese voice actorMasaharu Suzuki (鈴木 正治) (born 1970), Japanese footballerMasaharu Taguchi (田口 正治) (1916–1982), Japanese swimmerMasaharu Taniguchi (谷口 雅春) (1893–1985), Japanese philosopherMasaharu Ueda (上田 正治) (born 1938), Japanese cinematographerWachi Masaharu (和智 誠春) (died 1568), Japanese samuraiMasaharu Yamada (山田 政晴) (born 1980), Japanese weightlifterYonekura Masaharu (米倉 昌晴) (1728–1786), Japanese daimyō