Masami Yokoyama (横山雅美 Yokoyama Masami, born December 12, 1981) is a Japanese volleyball player who plays for Igtisadchi Baku.

This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (May 2015)

• Bunkyojoshi univ. Junior High → Seitoku Gakuen High School → Kaetujoshi college → Denso Airybees (2002-2010) → Hitachi Rivale(2010-2011) → Igtisadchi Baku

•  Japan Universiade national team (2001,2003)
•  Japan World Grand Prix 2005

• Team
  • Japan Volleyball League/V.League/V.Premier
    　Runners-up (1): 2007-2008
  • Kurowashiki All Japan Volleyball Championship
    　Champions (1): 2008