Cantabrian may refer to:
- People from modern Cantabria and things relating to this autonomous community in Spain.
- Cantabrian Mountains, mountain range in Northern Spain.
- Cantabrian Sea, southern end of the Bay of Biscay.
- Cantabrian dialect, also known as montañés, a transition dialect between Asturleonese and Spanish, spoken in northern Spain.
- Cantabri, ancient ethnic group.
- Cantabrian Wars, war during the Roman conquest of the ancient Cantabria and Asturias.
- Cantabrian circle, a military tactic employed by ancient Cantabri horse archers.
- People from the region of Canterbury, New Zealand