Leon Carr (June 10, 1910 – March 27, 1976) was an American songwriter, composer, arranger, pianist and conductor. He developed some famed marketing jingles used in advertisements, including for Mounds candy ("Sometimes You Feel Like a Nut..."), Chevrolet ("See the U.S.A. In Your Chevrolet"), and the "Bert the Turtle" theme song for the nuclear public education awareness film Duck and Cover.