David Arthur McNally (October 31, 1942 – December 1, 2002) was an American professional baseball player.
He played in Major League Baseball as a left-handed pitcher from 1962 through 1975, most notably as a member of the Baltimore Orioles dynasty that won four American League pennants and two World Series championships between 1966 and 1971.
A three-time All-Star, McNally won 20 or more games for four consecutive seasons between 1968 and 1971.
In 1978, he was inducted into the Baltimore Orioles Hall of Fame.