Alfred V. "Al" De Lory (January 31, 1930 – February 5, 2012) was an American record producer, arranger, conductor and session musician. He was the producer and arranger of a series of worldwide hits by Glen Campbell in the 1960s, including John Hartford's "Gentle on My Mind", Jimmy Webb's "By the Time I Get to Phoenix", "Wichita Lineman" and "Galveston". He was also a member of the 1960s Los Angeles session musicians known as The Wrecking Crew, and inducted into the Musicians Hall of Fame and Museum in 2007.
Born in Los Angeles, De Lory was the son of a studio musician. As a child he studied piano and began arranging music while in the Army. Upon his discharge, he worked as a pianist in studio orchestras and in clubs.
In the late 1950s De Lory co-wrote the 1960 #1 hit novelty song “Mr. Custer”, recorded by Larry Verne. As an L.A. based session musician in the early 1960s De Lory played keyboards for various Phil Spector "Wall of Sound" productions, recordings of Surf rock, and The Beach Boys’ Pet Sounds.