Hellenion
   An online organization devoted to the practice and study of ancient polytheistic Greek religion.
   http://www.hellenion.org/

The Supreme Council of the Gentile Hellenes
   Official site. The SCGH promotes the protection, moral defence and restoration of the ethnic, polytheistic Hellenic religion and tradition.
   http://www.ysee.gr/

Thiasos Olympikos
   Reconstructionist group dedicated to providing information on ancient Greek worship.
   http://home.pon.net/rhinoceroslodge/thiasos.htm