William Henry McEnaney (born February 14, 1952) is an American former professional baseball player.

He was a left-handed pitcher over parts of six seasons in Major League Baseball (1974–79) with the Cincinnati Reds, Montreal Expos, Pittsburgh Pirates and St. Louis Cardinals.

[2] He made his Major League debut at age 22 on July 3, 1974, in relief of starter Clay Carroll in a 4–1 Reds loss to the Los Angeles Dodgers at Riverfront Stadium.

[2] He earned the save in the seventh and final game as he pitched a perfect three-out ninth inning.

[2] For his Major League career he compiled 12–17 record with a 3.76 earned run average and 148 strikeouts in 269 appearances, all as a relief pitcher.