Gregory A. "Greg" Hawkes (born October 22, 1952) is a musician best known as the keyboardist for the rock band The Cars.

Hawkes, a native of Fulton, Maryland, attended Atholton High School where he played in a band called Teeth. He then attended Berklee College of Music for two years, majoring in composition and flute. He left to play in various bands, including Martin Mull and his Fabulous Furniture, where he played flute, saxophones and clarinet. He also played in a band called Richard and The Rabbits, which included future Cars bandmates Ric Ocasek and Benjamin Orr. He was the last member to join The Cars.