Battus can refer to:
- In Greek mythology, Battus is a shepherd from Pylos. Battus witnessed Hermes, in some cases Mercury, stealing Apollo's cattle. Though he promised his silence, he told many others. Hermes turned him to stone.
- In early Greek history, Battus was the founder of Cyrene, and several kings of Cyrene, of the same name, were descended from him.
- Battus is a genus of swallowtail butterflies, family Papilionidae, subfamily Papilioninae.
- Battus is also a pseudonym of Dutch author Hugo Brandt Corstius
- Battus was a certain order of penitents at Avignon, and in Provence, whose piety carried them to exercise severe discipline upon themselves, both in public and private.