Warren Entner (born 1944) is an American singer, songwriter, organist and guitarist for the rock and roll band The Grass Roots.

[1] Entner and his group The Grass Roots played at Newport Pop Festival 1969 at Devonshire Downs which was a racetrack at the time but now is part of the North Campus for California State University at Northridge.

Entner identified several songs written by other composers that proved successful when The Grass Roots covered them.

He was instrumental in identifying "Let's Live For Today", "Midnight Confessions" and "Lovin' Things" (written by Artie Schroeck) to name a few.

Owning his own firm Warren Entner Management, Entner managed a number of hard rock artists including Angel, Quiet Riot, Faith No More,[4] Rage Against the Machine, Deftones, as well as other acts such as The Grays, Failure and Nada Surf.