James Willard "Jay" Powell (born January 9, 1972) is an American former baseball pitcher who last played for the Atlanta Braves.

Following his junior year at Mississippi State, he was drafted by the Baltimore Orioles in the first round (19th pick overall) in 1993 and signed.

He played for the Florida Marlins, Houston Astros, Colorado Rockies, and Texas Rangers before signing with the Atlanta Braves in January of 2005.

Powell was the winning pitcher of Game 7 of the 1997 World Series for the Florida Marlins.

This biographical article relating to an American baseball pitcher born in the 1970s is a stub.