The Oakleigh Garden Historic District is a historic district in Mobile, Alabama, United States. It was placed on the National Register of Historic Places on April 13, 1972. It is centered on Washington Square and was originally bounded by Government, Marine, Texas, and Ann Streets. A boundary increase on January 30, 1991, increased the boundaries to Rapier Avenue, Selma, Broad, and Texas Streets. The district covers and contains 288 contributing buildings. The buildings range in age from the 1820s to the 1940s with most in a variety of 19th-century architectural styles.