Manfredo Irmin Fest (May 13, 1936 – October 8, 1999) was a bossa nova and jazz pianist, keyboardist, and bandleader from Brazil. Legally blind, he was born in Porto Alegre, Rio Grande do Sul, Brazil, and he died at 63 years old in Tampa Bay, Florida. He was husband of the composer Lili Fest and father of the guitarist Phill Fest.