Matthew "Mac" McClung (born January 6, 1999) is an American professional basketball player for the Philadelphia 76ers of the National Basketball Association (NBA), on a two-way contract with the Delaware Blue Coats of the NBA G League. He played college basketball for the Georgetown Hoyas and the Texas Tech Red Raiders. He was a consensus three-star recruit and among the highest-ranked high school players in Virginia.

McClung went unselected in the 2021 NBA draft and spent time during the 2021–22 season with the Chicago Bulls and Los Angeles Lakers. With the South Bay Lakers of the G League, he won the 2021–22 NBA G League Rookie of the Year award. McClung joined the Blue Coats for the 2022–23 season and signed with the 76ers in February 2023. He won the NBA Slam Dunk Contest at the 2023 NBA All-Star Game.