Lincoln Mayorga (March 28, 1937 – July 3, 2023) was an American pianist, arranger, conductor and composer who worked in rock and roll, pop, jazz and classical music.
Mayorga was born in Los Angeles, California, attended Hollywood High School, and trained as a classical pianist. He began working as arranger and accompanist to his high-school friends in the Four Preps, contributing one of the two piano parts on their 1958 hit "Big Man" and being known as "the fifth Prep".