group A is a Japanese avant-garde noise music and visual arts group from Tokyo. It forms in 2012 and remains active. The group consists of Tot Onyx, with Tommi Tokyo and Sayaka Botanic noted as the members in the project.

Its music combines experimental and noise elements with spoken word, and it is also associated with visual arts. Tommi Tokyo handles vocal, synthesizer and beat parts, while Sayaka Botanic plays violin and keyboard.