Callosa may stand for:
Callosa d'En Sarrià, a town in the comarca of La Marina Baixa, in the province of Alicante, Spain Callosa de Segura, a town in the comarca of El Baix Segura, in the province of Alicante, Spain Callosa, a genus of dwarf spiders Callosa, a species name
See also Including use as a species name