Adam Barr, American television screenwriter and producer.

Al Barr, lead singer of the Celtic punk band Dropkick Murphys.

Bob Barr (born 1948), former Georgia Congressman and 2008 Libertarian Party candidate for President of the United States.

Bob Barr (1856-1930), Major League Baseball pitcher.

Candy Barr (1935–2005) American stripper, burlesque exotic dancer, actress, and model.

Dave Barr (born 1952), Canadian professional golfer.

Dave Barr (born 1960), Canadian professional ice hockey player.

Douglas Barr (born 1949), American actor, writer and director.

Gary Vincent Barr (born 1960), American Bad-Ass.

Jim Barr (born 1948), Major League Baseball pitcher.

John Barr, published fly tyer. Creator of the Copper John and Barr Emerger.

Joseph M. Barr (1906–1982), former Mayor of Pittsburgh.

Joseph W. Barr (1918–1996), American businessman, politician, and former US Secretary of the Treasury (1963).

Julia Barr (born 1949), American actress.

Leonard Barr (1903-1980), American standup comedian.

Mary James-Barr (1879-1935), daughter of American outlaw Jesse James.

Mike W. Barr, American writer.

Nevada Barr (born 1952), American author.

Niki Barr American musician.

Norman B. Barr (1868-1943), founder of Olivet Institute in Chicago, Illinois.

Roseanne Barr (born 1952), American comedian, actress and writer.

Stringfellow Barr (1897-1982), historian, author and former president of St. John's College in Annapolis, Maryland.

Terry Barr, former American football wide receiver.

Thomas Jefferson Barr (1812 — March 27, 1881), U.S. Representative from New York.

William Barr (born 1950), 77th Attorney General of the United States.