Sadao Bekku (????, Bekku Sadao, May 24, 1922 in Tokyo – January 12, 2012 in Mitaka, Tokyo), was a Japanese classical composer.
His works include five symphonies, film scores, a flute sonata, a piano concerto, choral work and art songs, and the opera, Prince Arima.
His work took strong influence from jazz.
His most famous works include the film score, Matango (1963).