Acidava (Acidaua) was a Dacian and later Roman town and fort on the Olt river near the lower Danube. The settlement's remains are located in today's Enoşeşti, Olt County, Oltenia, Romania.

After the Roman conquest of Dacia by Roman Emperor Trajan, Acidava became a civilian and military centre, with castra being built in the area. Acidava was part of the Limes Alutanus, a line of fortifications built under emperor Hadrian running north–south along the Alutus (Olt) river. The function of the limes was to monitor the Roxolani to the east and deter any possible attacks.

Acidava is depicted in the Tabula Peutingeriana between Romula and Rusidava.

The same document depicts a second Acidava, between Cedoniae and Apula, but some authors believe it is actually a copy error and the correct name is Sacidava, another Dacian town.

• Acidava (castra)
• Dacia
• Roman Dacia
• List of ancient cities in Thrace and Dacia
• Dacian davae

• Archaeological sites around Enoşeşti on the Mapserver for Romanian National Cultural Heritage
• Many items recovered from Acidava are available at the Olt County Museum, Romania
• Acidava in the Princeton Encyclopedia of Classical Sites
• Acidava in the Dictionary of Greek and Roman Geography (1854)
• Sorin Olteanu's Project: Linguae Thraco-Daco-Moesorum – Toponyms Section
• A street in Bucharest, having the ancient city name: Strada Acidava