Fasciolopsis (/ˌfæsioʊˈlɒpsɪs, fəˌsaɪ-/) is a genus of trematodes. They are also known as giant intestinal flukes. Only one species is recognised: Fasciolopsis buski. It is a notable parasite of medical importance in humans and veterinary importance in pigs. It is prevalent in Southern and Eastern Asia. The term for infestation with Fasciolopsis is fasciolopsiasis.