Donald Paul Werner (born March 8, 1953) is an American former Major League Baseball catcher.

On June 16 of the same year he caught the only no-hitter of Hall of Famer Tom Seaver's career.

Werner played his first professional season with their Rookie League Gulf Coast Reds in 1971, and his last with Texas' Triple-A club, the Oklahoma RedHawks in 1988.

After the 2006 season he was named minor league catching instructor for the Orioles.

Werner then resumed his former post of minor league catching instructor for Baltimore in 2012.