Warren A. McLaughlin (January 22, 1876 – October 22, 1923) was an American Major League Baseball pitcher with the Philadelphia Phillies and Pittsburgh Pirates from 1900–1903.

He began pitching for the Phillies in July 1900, after playing for semi-pro teams in New Jersey.

[1] He spent some time with New London in the Connecticut League, before signing with Pittsburgh in September 1902.

[3] A resident of Plainfield, New Jersey,[4] he died at Muhlenberg Hospital on October 22, 1923, following an operation to treat emphysema as a complication of pleurisy.

[5] This biographical article relating to an American baseball pitcher born in the 1870s is a stub.