Robert Berry is an American guitarist, bassist, vocalist and record producer, best known for his work with Hush, 3 with Keith Emerson and Carl Palmer, Ambrosia, Alliance, and Los Tres Gusanos. He was previously with The Greg Kihn Band, and as of 2022, he is with progressive band Six By Six on bass, vocals and keyboards, a supergroup with guitarist Ian Crichton (Saga) and drummer Nigel Glockler.