Annetta South is a town in Parker County, Texas, United States.

[3] The town split from Annetta and incorporated in the 1980s, at which time it had a population of 115.

[4] According to the United States Census Bureau, the town has a total area of 1.9 square miles (4.9 km2), of which 1.9 square miles (4.9 km2) is land and 0.04 square miles (0.10 km2) (1.04%) is water.

As of the 2020 United States census, there were 621 people, 207 households, and 183 families residing in the town.

The Town of Annetta South is served by the Aledo Independent School District.