Leroy Leon Pendarvis, Jr. (born 1945) is an American session musician and keyboardist best known for his association with the Saturday Night Live Band, where he has served as its pianist, organist, Musical Director and Conductor since 1980. He is also a backing vocalist and an occasional guitarist.

The son of a second-grade primary school teacher and a school principal, Pendarvis grew up in North Augusta, South Carolina. His father was a deacon at the church and his mother, in addition to teaching, was also pianist at their church. The young Leon graduated from climbing up on the piano bench to hit the keys to being taught by his mother. He also learned to play trumpet and saxophone. He also was a bass player when he came to New York.

Pendarvis attended North Carolina Central University where he met and married Emily Norman. They had a daughter, Emile in 1966. After their divorce, he moved to New York and he met and married Janice Gadsden. They married some time after she moved in with her cousin Andrew Gadsden, who was Pendarvis's roommate.

Later, he married former Los Jovenes del Barrio singer Jillian Armsbury, who died in January 2009 from mesothelioma.

He married Josephine Deleon in 2018.

Pendarvis is a board member for the Mesothelioma Applied Research Foundation.

Pendarvis played keyboards and provided the backing vocals for Richard Roundtree's 1972 album, The Man from Shaft. Along with Janice Gadsden, he co-wrote "Sing a Happy Song" for Taj Mahal. He also produced the song which was released in 1978.

He composed, recorded and mixed the original dramatic music for the music video "BAD" by Michael Jackson.