Lawrence William Knechtel (August 4, 1940 – August 20, 2009) was an American keyboard player and bassist, best known as a member of the Wrecking Crew, a collection of Los Angeles-based session musicians who worked with such renowned artists as Simon & Garfunkel, Duane Eddy, the Beach Boys, the Mamas & the Papas, the Monkees, the Partridge Family, Billy Joel, the Doors, the Grass Roots, Jerry Garcia, and Elvis Presley, and as a member of the 1970s band Bread.