Masahiko (written: 正彦, 雅彦, 誠彦, 昌彦, 允彦, 政彦, 真彦, 正比古 or まさ彦) is a masculine Japanese given name. Notable people with the name include:
*, an officer in the Imperial Japanese Army imprisoned for his involvement in the Amakasu Incident
*, a Japanese mathematician best known as an essayist
*, a Japanese ski jumper
*, a Japanese footballer
*, a Japanese football player
*, a Japanese politician of the Liberal Democratic Party
*, a Japanese columnist, photographer, and pundit
*, a Japanese judoka (Judo practitioner)
*, a bonsai master
*, a chef specializing in Italian cuisine
*, or Matchy is a Japanese singer, lyricist and actor
*, a Japanese former football player
*, a Japanese anime producer and president of Bones
*, a linguistics professor at San Francisco State University
*, Japanese baseball player
*, a Japanese ''Magic: The Gathering'' player
*, a Japanese film director
*, a former Japanese football player
*, a manga artist from Kōchi City, Japan
*, a Japanese theatre and film actor
*, a Japanese journalist who advocated Takeji Furukawa's idea
*, a Japanese politician of the Liberal Democratic Party
*, a Japanese writer
*, Japanese kickboxer
*, the head of the domestic affairs section of the Military Affairs Bureau of the Imperial Japanese Army during World War II
*, Japanese voice actor
*, Japanese jazz percussionist and composer
*, Japanese rugby union player
*, a Japanese actor and director
*, Japanese shogi player
*, a Japanese politician of the Democratic Party of Japan
*, Japanese speed skater
*, a Japanese guitarist
{{given name
Japanese masculine given names