Coventina was a Romano-British goddess of wells and springs. She is known from multiple inscriptions at one site in Northumberland county of the United Kingdom, an area surrounding a wellspring near Carrawburgh on Hadrian's Wall. It is possible that other inscriptions, two from Hispania and one from Narbonensis, refer to Coventina, but this is disputed.
Dedications to Coventina and votive deposits were found in a walled area which had been built to contain the outflow from a spring now called "Coventina's Well". The well and the walled area surrounding it are nearby the site variously referred to as Procolita, Brocolitia, or Brocolita, once a Roman fort and settlement on Hadrian's Wall, now known as Carrawburgh (The name "Procolita" is found in the 5th century document Notitia Dignitatum, and "Brocolita" in the 7th century Ravenna Cosmography). The remains of a Roman Mithraeum and Nymphaeum are also found near the site.
The well itself was a spring in a rectangular basin 2.6m x 2.4m in the centre of a walled enclosure 11.6m x 12.2m within a wall 0.9m thick. The contents of the well included 13487 coins from Mark Anthony to Gratian, a relief of three water nymphs, the head of a male statue, two dedication slabs to the goddess Coventina, ten altars to Coventina and Minerva, two clay incense burners, and a wide range of votive objects.
The site near Coventina's Well was excavated by British archaeologist, John Clayton, in 1876. The date of the wall at Coventina's Well is uncertain, but some have theorized that it was built sometime after the completion of the Roman fort (dated between the years 128 and 133). Since Hadrian's Wall does not deviate to avoid the well, this may suggest that the boundary wall around the well was built some time after in order to control the flow of water in a marshy area.