Byron Atkins "Barney" Slaughter (October 6, 1884 in Smyrna, Delaware – May 17, 1961 in Philadelphia, Pennsylvania) was a pitcher in Major League Baseball. He pitched 8 games for the Philadelphia Phillies in 1910. He recorded one loss and one save in his career, mostly as a relief pitcher. He also started one game. In 1911 Slaughter pitched for Scranton in the New York State League, and subsequently for Louisville in the American Association, Sioux City in the Western League, and Erie in the Central League, before retiring from organized baseball in 1913.