The Tokyo International Viola Competition is the only international competition in Asia-Pacific exclusively for viola.

The competition is held every three years as part of the Viola Space, a festival for viola founded in 1992 through the initiative of internationally distinguished violist Nobuko Imai, and dedicated to "celebrating the viola", "introducing outstanding works and new works for viola", and "fostering young artists". Winners of the competition are guaranteed a chance to perform in concerts at Viola Space in future years. In parallel with the competition, regular concerts and open master classes for young musicians are held every year in the context of Viola Space, so as to explore the diverse appeal and wide range of possibilities offered by the instrument.