Dennis Dean Werth (born December 29, 1952) is an American former Major League Baseball catcher, first baseman, and outfielder.

Werth is an alumnus of Southern Illinois University Edwardsville and Lincoln College.

Drafted by the New York Yankees in the 19th round of the 1974 Major League Baseball Draft, Werth made his Major League debut with the New York Yankees on September 17, 1979, and appeared in his final game on September 27, 1982.

[citation needed] He was traded from the Yankees to the Royals for minor-league right-handed pitcher Scot Beahan during spring training on March 24, 1982.

This biographical article relating to an American baseball first baseman is a stub.