Jim Cullum Jr. (September 20, 1941 – August 11, 2019) was an American jazz cornetist known for his contributions to Dixieland jazz. His father was Jim Cullum Sr., a clarinetist who led the Happy Jazz Band until 1973. Jim Cullum Jr. led the Jim Cullum Jazz Band as its successor. His band mates included Evan Christopher, Allan Vaché, and John Sheridan.