Mack Francis Mattingly (born January 7, 1931) is an American diplomat and politician from Georgia who served as a member of the United States Senate for one term from 1981 to 1987.

He served four years in the United States Air Force from 1951 to 1955 and was stationed at Hunter Army Airfield in Savannah, Georgia.

Two years later, Mattingly would help Bo Callaway organize the Georgia Republican Party and joined his ticket as a candidate for the U.S. House of Representatives against Congressman W. S. Stuckey Jr. Mattingly lost the race but was elected a member of the Georgia Republican Party State Executive Committee and served as Vice Chairman from 1968 until 1975.

In 1980, Mattingly scored a historic upset, defeating longtime Democratic Senator Herman Talmadge, outpolling Ronald Reagan who lost the state in the presidential election to native son Jimmy Carter.

He is perhaps best remembered as a proponent of the line-item veto, a position that earned him recognition by President Ronald Reagan during his 1985 State of the Union address.

[4] While the motion would fail, a 1986 amendment from Representative Chalmers Wylie would successfully defund Playboy's Braille edition.

[6] In November 1986, Mattingly was narrowly defeated in his bid for re-election by Congressman Wyche Fowler of Atlanta.