Heathenry is a modern neo-pagan spirituality informed by the folkloric practices, customs, beliefs, and worldviews of pre-Christian Northern European civilizations. Norse Paganism is a modern adaptation of old spiritual practices and beliefs held by the ancient Norse people. Norse Paganism is sometimes also referred to as Ásatrú or Forn Sidr/Forn Sed.
Heathenry is a spirituality that is decentralized, animistic, pluralist, polytheistic, life-affirming, and orthopraxic. To learn more about what these mean, see Norse Pagan Practice.