Percy Gaston Humphrey (January 13, 1905 – July 22, 1995[1]) was an American jazz trumpeter and bandleader in New Orleans, Louisiana.

A 1951 album, New Orleans Parade, features Humphrey, trombonists Charles "Sunny" Henry and Albert Warner, and saxophonist Emanuel Paul.

Their 1962 sessions, Jazz at Preservation Hall, Volume 1: the Eureka Brass Band of New Orleans, issued on Atlantic Records, features Humphrey and his brother, Willie, trumpeters Kid Sheik Cola and Peter Bocage, trombonists Albert Warner and Oscar "Chicken" Henry, Emanuel Paul on tenor saxophone, Wilbert "Bird" Tillman on sousaphone, snare drummer Cie Frazier, and bass drummer Robert "Son Fewclothes" Lewis.

The Eureka Brass Band disbanded in 1975, but Humphrey subsequently revived the name for festival performances and other appearances.

His last performance was at the annual New Orleans jazz festival in April, three months before his death at the age of ninety.