Charax (Ancient Greek: Χάραξ, gen.: Χάρακος) is the largest Roman military settlement excavated in the Crimea. It was sited on a four-hectare area at the western ridge of Ai-Todor, close to the modern tourist attraction of Swallow's Nest.
The military camp was founded under Vespasian with the intention of protecting Chersonesus and other Bosporean trade emporiums from the Scythians. By the end of the 1st century AD, the Roman forces were evacuated from the peninsula. Several decades later the camp was restored by a vexillatio of the Legio I Italica; it hosted a detachment of the Legio XI Claudia at the end of the 2nd century. The camp was abandoned by the Romans in the mid-3rd century.