Cabell "Cab" Calloway III (25 December 1907 – 18 November 1994) was a famous American jazz singer and bandleader.

Calloway was a master of energetic scat singing and led one of the United States' most popular African American big bands from the start of the 1930s through the late 1940s. Calloway's band featured performers including trumpeters Dizzy Gillespie and Adolphus "Doc" Cheatham, saxophonists Ben Webster and Leon "Chu" Berry, New Orleans guitar ace Danny Barker, and bassist Milt Hinton. Calloway continued to perform until his death in 1994 at the age of 86.

Calloway was born in a middle-class family in Rochester, New York, on Christmas Day 1907 and lived there, until 1918, on Sycamore Street. He was later raised in Baltimore, Maryland. His father, Cabell Calloway II, was a lawyer and his mother, Martha Eulalia Reed, was a teacher and church organist. When Cab was young, he would enjoy singing in church. His parents recognized their son's musical talent and he began private voice lessons in 1922. He continued to study music and voice throughout his formal schooling. Despite his parents' and vocal teachers' disapproval of jazz, Calloway began frequenting and eventually performing in many of Baltimore's jazz clubs, where he was mentored by drummer Chick Webb and pianist Johnny Jones.