Shea Marshall (born August 31, 1984, in Pittsburgh, Pennsylvania) is an American multi-instrumentalist and session musician whose primary instruments are saxophone and Hammond B-3.

He started college at the age of 16 at Arizona State University and studied electrical engineering.

Marshall had lived in Phoenix, Arizona since 2001 and composes, records, and performs in many styles of music.

Marshall has worked as a session musician with Obadiah Parker, Dennis Rowland, Maceo Parker, Bernard Purdie,[1] Dick Wagner, Maceo Parker, Johnny DeFrancesco, Jason DeVore (of Authority Zero), Black Carl, Julito Padrón, Joe Gallivan, Cait_Brennan, Dan Tomlinson, Blaine Long, Juini Booth, Carolina Cerisola, Mickey McGee, T. R. Hummer,[2] Leroy Jenkins, Johnny DeFrancesco, Kris Hill, Papa John DeFrancesco, the Sugar Thieves, the Lymbyc Systym, Landau Eugene Murphy Jr., David Hernandez, Joe Morris, The New Standards, Mega Ran, Michael Henderson, Alexander O'Neal, Haley Reinhart, and Wayne Newton.

[3] Marshall is based in Las Vegas, Nevada and plays the Carrara marble piano at MGM Mansion.