Pontian may refer to:
- Pontian, in stratigraphy the uppermost Miocene Paratethys stage, coeval with the Messinian
- Pontian Greeks, a group of ethnic Greek who inhabited northern Turkey
- Pontian Islands, a group of islands on the coast of Italy
- Pontian, Johor, a district in Johor, Malaysia
- Pope Pontian, a third century Pope