Harold James Wiltse (August 6, 1903 – November 2, 1983) nicknamed "Whitey", was a professional baseball pitcher.

He played all or part of four seasons in Major League Baseball between 1926 and 1931 for the Boston Red Sox (1926–28), St. Louis Browns (1928) and Philadelphia Phillies (1931).

Wiltse, nicknamed "Whitey", posted a 20–40 record with 134 strikeouts and a 4.87 ERA in 102 appearances, including 65 starts, 23 complete games, two shutouts, one save, and 500+1⁄3 innings pitched during his major league career.

He also had an extensive minor league baseball career, spanning fifteen seasons from 1923 until 1937.

This biographical article relating to an American baseball pitcher born in the 1900s is a stub.