Look up septentrion in Wiktionary, the free dictionary.
Septentrion may refer to:
- Septentrional, a Latinate word once used in English and French to refer to northern regions
- Septentrionalist, referring to the Viking revival of the 18th and 19th centuries
- Operation Septentrion, a 2009 ISAF military operation in Afghanistan
- Septentrional-Oriente fault zone, a geological fault in the Caribbean