Walter Carlisle (6 July 1881 – 27 May 1945) was an English-born professional baseball outfielder in the United States in the early 20th century. He played briefly in Major League Baseball (MLB) for the Boston Red Sox during the 1908 season. Nicknamed "Rosy", he was a switch-hitter and threw right-handed. Carlisle is best remember for successfully executing an unassisted triple play as an outfielder in 1911.