Carl Mack "Skinny" McNabb (January 25, 1917 – July 16, 2007) was a professional baseball player.

McNabb began his professional baseball career in 1936 with the Ozark Cardinals of the Alabama–Florida League.

He was hitless in his only major league game, striking out in his only at bat, which came against Steve Gromek of the Cleveland Indians on April 20, 1945.

Following his baseball career, McNabb moved to Jasper, Tennessee, where he ran a grocery store, then became a rural mail carrier for 22 years.

He was a veteran of the U.S. Army who served in World War II as a medic, and also started and coached an American Legion Baseball team in Jasper.