Roy Bittan (born July 2 1949 in Rockaway Beach, New York ) is a musician best known as a member of Bruce Springsteen & the E-Street Band, which he joined on August 23, 1974. Bittan, nicknamed "The Professor", plays the piano, organ, accordian and synthesizers.

Bittan has played on several dozen albums, not only for Springsteen but also David Bowie, Jackson Browne, Tracy Chapman, Chicago, Catie Curtis, Dire Straits, Peter Gabriel, Meat Loaf, Stevie Nicks, Bob Seger, Patty Smyth, Jim Steinman, and Bonnie Tyler.