Outernet may refer to:
- The previous name of the company Othernet
- Outernet (novel series), a humorous series of children's science fiction books written by Steve Barlow and Steve Skidmore
- Outernet (network), a wireless community network based in Poland
- Outernet London, a mixed use urban development
- Notes from the Outernet, a 2011 limited edition book of intimate photographs taken by Jared Leto
- United States Joint All-Domain Command and Control#Outernet, the US Space Force's internet in outer space