Chester Conn, born Master Chester Cohn on April 14, 1894, in San Francisco, California, was a prominent American composer of popular music and a music publisher. Raised by his mother, Minnie Newman, after the early death of his father, David Cohn, Chester began his career in music publishing in New York with Broadway Music Corp in 1918 and later worked for Leo Feist, Inc., in Chicago by 1922.

In 1937, Conn co-founded the New York music publishing firm Bregman, Vocco & Conn, Inc. (BVC), alongside Jack Bregman and Rocco Vocco. His son, Jack D. Conn, was also an executive at BVC until his death in 1966. Following the deaths of his partners and son, Chester sold the company to 20th Century Fox in 1967 for $4.5 million.

Chester Conn is best known for his song "Sunday," which has become a jazz standard recorded in numerous sessions from 1926 to 2015. His other notable compositions include "My Suppressed Desire," "Outside of Heaven," and "Night Lights," among others. His works have been performed by legendary artists such as Nat King Cole, John Coltrane, and Frank Sinatra.

Chester Conn passed away on April 4, 1973, in Flushing, Queens, leaving behind a legacy of influential music that continues to be celebrated.