Gregory Harry "Gregg" Karukas (born May 18, 1956) is a Grammy winning smooth jazz keyboardist, producer, composer and pianist, originally from the Washington, D.C.-Bowie, Maryland area. He experimented with drums, guitar, trumpet and keyboards as a child, but it was not until his teens that he pursued music professionally as a pianist, having played with the award winning Bowie High School Starliners big band.

He was an early synthesizer proponent at age 16, owning one of the first Minimoogs and co-founded the fusion group East Coast Offering with former Air Force Airmen of Note saxophonist Tim Eyermann, becoming DC's top original jazz/rock band. He then went on to form Natural Bridge with Shannon Ford, Carl Cable and Wink Robinson; later members included Michael Manring, Gerry Kunkel, Joe Dougherty and Steve Bloom on percussion. Gradually, since moving to Los Angeles in 1982 he developed a melodic and soulful style of music that made him a mainstay on smooth jazz and radio circuit.