Onís (disambiguation)
Onís stands for:
- Cangas de Onís , municipality in the Asturias region in northern Spain
- Onís , municipality in the Asturias region in northern Spain
Onís is the family name of the following people:
- Federico de Onís (1885–1966), Spanish author and literary critic
- Luis de Onís (1762–1827), Spanish politician and diplomat