Ramón Sender Barayón (born October 29, 1934) is a composer, visual artist and writer. He was the co-founder, with Morton Subotnick, of the San Francisco Tape Music Center in 1962. He is the son of Spanish writer Ramón J. Sender.
Sender was born in Madrid, Spain. He studied piano with George Copeland, harmony with Elliott Carter, and counterpoint and fugue with Harold Shapero (1948–1951). Sender attended the Conservatorio di Santa Cecilia in Rome and Columbia University in New York, where he studied with Henry Cowell. He also studied with Robert Erickson at the San Francisco Conservatory of Music (1959–1962) and at Mills College, where he studied with Darius Milhaud. Sender holds a Bachelor of Music degree from the San Francisco Conservatory of Music and an M.A. from Mills College.
Sender co-founded the San Francisco Tape Music Center in 1962 with Morton Subotnick and also collaborated with composers and visual artists including Pauline Oliveros, Tony Martin, Joseph Byrd, Terry Riley, William Maginnis, and many others until 1966 when the Center was incorporated into Mills College. It was later named the Mills Center for Contemporary Music and continues to function today.
Sender participated with Don Buchla in the design of the Buchla Box, one of the first music synthesizers.