Casalvecchio (Arbërisht: Kazallveqi) is an Arbëreshë comune and village in the Province of Foggia, Apulia, southern Italy. Mostly originating from a 15th-century migration of Albanians, the residents have subsisted by family farming. Of those native to the area for generations, many have continued to use the Arbëreshë language, even those of the post-World War 2 generation. The population in 2003 was 2,082.