Name: Fukuyama Masaharu (福山雅治)
| Nickname: Masha (ましゃ)
| Birthdate: February 6, 1969
| Birthplace: Nagasaki, Japan
| Blood Type: O
| Height: 180cm
| Shoe Size: 27.5cm

Masaharu Fukuyama (福山 雅治, Fukuyama Masaharu, born February 6, 1969) is a Japanese singer-songwriter, actor, radio personality, and photographer from Nagasaki, Nagasaki Prefecture. Among fans, he is known as Masha, Masha-nii, or Fuku-chan. He debuted in 1990 with single Tsuioku no Ame on Naka and still remains active and popular to this date.