Robbie Merrill is an American bass guitar player, best known for his work with the rock band Godsmack.

Robbie was one of the founding members of Godsmack. Merrill met Sully Erna through Sully's sister, and the two became roommates and friends. In February 1995, Erna decided to start a new band as the lead singer after playing the drums for more than 23 years. His new band, The Scam, formed with Erna on vocals, Robbie Merrill on bass, local guitarist and friend Lee Richards on guitar, and Tommy Stewart on drums quickly changed its name to Godsmack, after recording one demo.

Robbie is also a founding member of the band Another Animal along with Shannon Larkin, Tony Rombola, Lee Richards, and Whitfield Crane.

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