The Baths of Antoninus or Baths of Carthage, located in Carthage, Tunisia, are the largest set of Roman thermae built on the African continent and one of three largest built in the Roman Empire.

[2] The baths are also the only remaining Thermae of Carthage that dates back to the Roman Empire's era.

The clay soil that bordered the Mediterranean Sea created a need for a larger foundation.

[6] The typical structure of the bathhouses had service areas in the basement, but the soft clay would not accommodate such developments.

On 17 February 2012, the Tunisian government proposed the Roman hydraulic complex Zaghouan-Carthage, that the baths are part of, as a future World Heritage site.