The St. Albans Post Office, also known as Old St. Albans Post Office, is a historic post office building located at 202 Sixth Ave. in St. Albans, Kanawha County, West Virginia. It was built in 1937, and is a one-story, five bay brick building with a metal hip roof in Colonial Revival style. A rear addition was built about 1955. It was designed by the Office of the Supervising Architect under Louis A. Simon and Supervising Engineer Neal A. Melick.