Joseph Harold Negri (born June 10, 1926) is an American jazz guitarist and educator. He appeared on the 1959 children's television program Adventure Time. Negri appeared, along with pianist and fellow Pennsylvanian Johnny Costa, on the 1954 TV series, 67 Melody Lane, hosted by Ken Griffin. They played two songs: "After You've Gone" and "Little Brown Jug" the latter accompanied by Griffin at the organ. He also recorded with the Three Suns. He appeared as himself and as "Handyman Negri" in the Neighborhood of Make-Believe segments on Mister Rogers' Neighborhood. Negri taught jazz guitar for 49 years at the University of Pittsburgh, where jazz guitar was first offered as a discipline in higher education. He also taught for 46 years at Duquesne University, as well as at Carnegie Mellon University.