Masuyama

Masuyama (written: 増山, 益山 or 桝山) is a Japanese surname. People with this surname include:


 * Motosaburo Masuyama (増山 元三郎), Japanese statistician
 * Eiko Masuyama (増山 江威子), Japanese voice actress
 * Tsukasa Masuyama (益山 司), Japanese footballer