Gregory Dean Camp is an American guitarist, songwriter, and vocalist. He is best known as a founding member of the rock band Smash Mouth and served as a guitarist and songwriter across several stints. Camp is credited as one of the main songwriters for the band, and as such received a Grammy nomination for the song "All Star". Since leaving the band for a solo career in 2008, he has rejoined Smash Mouth periodically. Camp is currently a member of The Defiant.