Billy Lee Tipton (December 29, 1914 – January 21, 1989) was an American jazz musician, bandleader, and talent broker. He is notable for having been posthumously outed as a transgender man.

Tipton's music career began in the mid-1930s when he led a band for radio broadcasts. He played in various dance bands in the 1940s and recorded two trio albums for a small record label in the mid-1950s. Thereafter, he worked as a talent broker. He stopped performing in the late 1970s due to arthritis.

Tipton lived and identified as male for most of his adult life. After his death in 1989, paramedics discovered he was assigned female at birth, to the surprise of his friends and family. Tabloids and national newspapers picked up the story, scandalously reporting that "he was a she".

Tipton is considered a prominent figure in transgender history in the United States. His story inspired various fictional retellings, including the 1998 novel Trumpet, and a 2020 documentary film, No Ordinary Man.