John Wallace Morris (born August 23, 1941) is an American former Major League Baseball pitcher.

A left-hander, he appeared in 132 games played, all but ten as a relief pitcher, during all or parts of eight seasons between 1966 and 1974 for the Philadelphia Phillies, Baltimore Orioles, Seattle Pilots / Milwaukee Brewers and San Francisco Giants.

He signed with the nearby Phillies in 1960, played 51⁄2 years in their farm system, and made his MLB debut in July 1966.

[1] That autumn, he was selected in the American League expansion draft by the fledgling Seattle Pilots.

Morris was a Brewer for 69 games, more than half of his MLB appearances, and threw his only two complete games;[1] they happened in two consecutive starts in May 1970, on the 13th against the New York Yankees, a three-hit, 3–1 triumph, and the 19th against the Oakland Athletics, a 6–3 win over Catfish Hunter.