The Corpus Vasorum Antiquorum ('Corpus of Ancient Vases') is the oldest research project of the Union Académique Internationale.

It consists of a series of high-quality catalogues of mostly ancient Greek painted pottery in collections around the world. The first fascicule appeared in 1922 and since then almost 400 have appeared, illustrating more than 100,000 vases in 24 countries.

The three-year CVA Online project began in 2000, when Oxford University's Beazley Archive (Classical Art Research Centre) was invited to undertake the digitization of out-of-print fascicules. Some further digitization has occurred up to 2016. The digitized catalogues can be viewed and browsed through this site, which also provides links to the fully searchable Beazley Archive Pottery Database.