Fasciolopsis (/ˌfæsioʊˈlɒpsᵻs, fəˌsaɪ-/) is a genus of trematodes. Just 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.