John McNally (born 18 October 1998) is a former American tennis player.

McNally made his Grand Slam main draw debut at the 2016 US Open in the doubles event, partnering J. J. Wolf.

He won his first Professional Title at the ITF Mens 25K Future in Columbus, Ohio.

(November 2021) He received a wild card into qualifying for the 2019 Western & Southern Open.

His younger sister, Caty McNally, is also a professional tennis player.