Ryota Kohama (Japanese: 小浜良太, Hepburn: Kohama Ryōta, born 4 September 1989), better known by his stage name Ryota, is a Japanese musician who is best known for being the bassist of the rock band One Ok Rock. He was in the hip-hop dance group Heads along with Toru Yamashita (guitarist of One Ok Rock) before they disbanded in 2002. Kohama is the brother-in-law of Canadian singer Avril Lavigne. He married her younger sister Michelle Lavigne, and they have a daughter together.

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