John Joseph Powell (July 9, 1874 – October 17, 1944) was a Major League Baseball pitcher at the end of the 19th century and the turn of the 20th century. He had a relatively successful 16-year career, which lasted from 1897 to 1912 – he won 245 games, but also lost 254 games. So, despite his sparking 2.97 career ERA, he holds the record for most wins by a pitcher with a career losing record. Powell retired after the 1912 season. He died in Chicago in 1944.