Dennis Martin Walling (born April 17, 1954) is a former Major League Baseball player.
Walling played all or part of eighteen seasons in the majors, from 1975 to 1992.
He played his most games as a third baseman, but also saw significant time as an outfielder and first baseman.
Walling may be best known as a pinch-hitting specialist for the Houston Astros.
Nicknamed "Good Wood", Walling was a valuable bat off the bench for most of his career.
Entering the 2009 season, his 108 career pinch hits are tied for 13th all-time.
He hit .271 out of 2,945 lifetime at bats.
Walling was formerly served as the hitting coach for the Norfolk Tides, the Triple-A affiliate of the Baltimore Orioles before Butch Davis