Barry Louis Jaeckel (born February 14, 1949) is an American professional golfer who played on the PGA Tour and the Champions Tour.

Jaeckel was born in Los Angeles, California, and is the son of actor Richard Jaeckel. He attended Palisades High School, Santa Monica Junior College, turned professional in 1971, and joined the PGA Tour in 1975.

Jaeckel played in 515 PGA Tour events from 1975-1995; he had over two dozen top-10 finishes including a win at the 1978 Tallahassee Open and 2nd-place finishes at the 1981 Tournament Players Championship, which he lost in a playoff to Raymond Floyd and the 1983 Kemper Open which he lost in a playoff to Fred Couples. His best finish in a major was T-28 at the 1976 U.S. Open.

Jaeckel played in Europe before joining the PGA Tour. In 1972 he won the Open de France defeating Clive Clark in a sudden death playoff. Along with Walter Hagen and Byron Nelson, Jaeckel is one of only three Americans ever to win the event. He holds the lowest-under-par winning score at the Open de France; 23-under-par 265.

After reaching the age of 50 in February 1999, Jaeckel joined the Senior PGA Tour. His best finish was a T-10 at the 2000 Audi Senior Classic.

Jaeckel lives in Palm Desert, California.