Alfred Augustus McKethan (October 14, 1908 – April 1, 2002) was a prominent American banker, citrus grower, businessman and political appointee who was a native and resident of Florida.

He served as president and chief executive officer of the Sun Bank and Trust Company until 1994, at which time he retired.

Together with his brother, John W. McKethan, he established the Brooksville Rock Company, which later became known as the Florida Mining and Materials Corporation.

Florida Governor Fuller Warren appointed McKethan to be the chairman of the State Road Board; he served from 1949 to 1953.

[4] McKethan was responsible, in part, for the construction of the Sunshine Skyway Bridge across Tampa Bay, as well as for the initial planning of the Florida Turnpike.