Manami Wakayama

 is a Japanese idol. She has had the role of Sailor Mercury and Berthier in the Sailor Moon Musicals or Seramyu. She held the role of Mercury from 2002 to 2005, graduating from the role with the musical "Shin Kaguya Shima Densetsu - Kaiteiban". She has also released several idol DVDs and appeared in various other musicals.