Gregory Phillip "Greg" Grunberg (born July 11, 1966) is an American actor and comedian who is best known as J.J. Abrams' "good luck charm" and appeared with him in Mission: Impossible III, Star Trek, and Super 8. Grunberg is also known for his role as Matt Parkman on the NBC series Heroes.

He appears in the 2015 film Star Wars: The Force Awakens as the X-Wing pilot Snap Wexley and voiced Ben Parker in the Ultimate Spider-Man episode "Strange".