Martin Davis Eichelberger, Jr. (born September 3, 1943) is an American professional golfer who has won several tournaments at both the PGA Tour and Champions Tour levels. Eichelberger was born in Waco, Texas. He started in the game at the age of 13 in the junior programs at his family's golf club in Waco. He attended Oklahoma State University in Stillwater, Oklahoma; and while there blossomed into an outstanding amateur. He led the Oklahoma State Cowboys to the 1963 NCAA Championship. He graduated in 1965 and turned pro in 1966.