Fred Lipsius (born 19 November 1943 in the Bronx) is the original saxophonist and arranger for the jazz-rock band Blood, Sweat & Tears, for which he played alto saxophone and piano. He was with the band from 1967 to 1971.
Before Blood, Sweat & Tears, Lipsius played with the Ronn Metcalfe Orchestra.
Lipsius has performed with Simon & Garfunkel, Janis Joplin, and jazz greats Cannonball Adderley, Thelonious Monk, Zoot Sims, Eddie Gómez, Al Foster, George Mraz, Larry Willis, Randy Brecker, and Rodney Jones. He has written music for and performed on over 30 CDs as both a leader and sideman. He has authored six books on jazz improvisation and jazz reading.
Lipsius now teaches at Berklee College of Music in Boston, Massachusetts, USA.