Mariko Gotō (後藤 まりこ, Gotō Mariko) (born February 22, 1982, in Izumiōtsu, Osaka) is a Japanese singer, lyricist, and composer. Her career started in the early 2000s with the band Usagi (うさぎ), where she sang and played guitar.

After it broke up in 2003, she joined punk jazz group Midori together with Usagi's bassist, Yoshifumi Kuwano. Midori released three full-length albums, five EPs, and a single. After its dissolution, Gotō focused on her solo career as a musician, as well as a stage, film, and television drama actress.