Cyde Hart (1910 - March 19, 1945) was an American jazz pianist and arranger.
He was first active from 1929 when Hart performed with Gene Coy and part of Jap Allen's band from 1929 to 1931.
Hart played piano in Blanche Calloway's big band from 1931 to 1935 and was based in New York City from 1936.
In the last few months before his death, Hart started making records under his own name. He died of tuberculosis in March 1945, at the age of 35.