Denis John Menke (July 21, 1940 – December 1, 2020) was an American professional baseball infielder and coach.

He played for the Milwaukee / Atlanta Braves (1962–67), Houston Astros (1968–71, 1974) and Cincinnati Reds (1972–73), all of the National League.

In 1969, Menke and Houston outfielder Jim Wynn hit grand slam home runs in the same inning.

Menke started his coaching career as a manager in 1977 with the Burlington Bees of the Midwest League, a farm team of the Milwaukee Brewers.

The following year he managed the Dunedin Blue Jays of the Florida State League, with 59 wins and 89 losses.