Raymond LeRoy Clark (December 11, 1917 – July 5, 2000) known professionally as Yodelin' Slim Clark was an American musician known for his yodeling.

He was born in Springfield, Massachusetts, United States, the son of Mr. and Mrs. Charles Clark. Slim completed two years of high school, at which time he became a professional musician at the age of 15 in 1932 - however, he was performing at grange halls and fairs as early as 1930. In 1945, Slim began spending his summers in Maine, and in 1952 he became a resident there. Clark was first married to Mildred Towne from North Dana. They had two children, Lee and May. He was married to Celia Jo Roberson Clark in 1943. He had two children with Celia, Jewel LaVerne Clark and Wilf Carter Clark, both of whom have pursued careers in music, including yodeling. He was divorced from Celia in 1968. He was married in 1981 to Dr. Kathleen M. Pigeon Clark.

Raymond Clark died in St. Albans, Maine on July 5, 2000. Kathleen Clark still resides there.