James Phillip Rooker (born September 23, 1942) is an American former Major League Baseball pitcher and broadcaster.

A left-hander, Rooker pitched for the Detroit Tigers (1968), Kansas City Royals (1969–1973) and Pittsburgh Pirates (1974–1980).

After being selected by the Kansas City Royals in the October 1968 expansion draft he made the starting rotation.

After winning only seven games against 13 losses over the next two seasons Rooker was traded to the Pittsburgh Pirates for Gene Garber.

His career nearing the end, Rooker posted a 4–7 record in the regular season as a spot starter.

After his playing career, Rooker, well known for speaking his mind as a player, joined the Pirates’ radio and television broadcast team, with whom he worked as a color analyst from 1981 (one year after he retired) through 1993.

Rooker's most famous moment as a broadcaster came on June 8, 1989, during a Pirates’ road game against the Philadelphia Phillies at Veterans Stadium.

In the eighth inning the Phillies, now trailing only 11–10, scored the tying run on a wild pitch, then took the lead on Darren Daulton's two-run single and went on to win 15–11.