Theisoa
Theisoa may refer to:
- Theisoa (nymph), one of the nymphs in Greek mythology
 - Theisoa (moth), a genus of the moth family Gelechiidae
 - Theisoa, Greece, a village in the municipal unit of Andritsaina, Elis, Greece
 - Theisoa (Arcadia), a town of ancient Arcadia, Greece
 - Theisoa (Orchomenus), a town of ancient Arcadia, Greece