James Roy Crabb (August 23, 1890 – March 30, 1940) was a Major League Baseball pitcher.

He pitched part of one season, 1912, in the majors.

He made his major league debut in August for the Chicago White Sox, and ten days later his contract was sold to the Philadelphia Athletics, where he finished the season.

Crabb worked as a painter for the nine years prior to his premature death at age 49 of lung cancer.

This biographical article relating to an American baseball pitcher born in the 1890s is a stub.