Denis John Menke (born July 21, 1940) is a former professional baseball infielder.
He played all or part of thirteen seasons in Major League Baseball from 1962 to 1974.
He played for the Milwaukee Braves (1962–65), Atlanta Braves (1966–67), Houston Astros (1968–71, 1974) and Cincinnati Reds (1972–73), all of the National League.
He was elected to the National League All-Star team in 1969 and 1970.