Religio Romana 
The Religio Romana is the pre-Christian religion of Rome. Sometimes called "Roman Paganism", modern practice the Religio Romana is an attempt to reconstruct the ancient faith of Rome as closely as possible, making as few concessions to modern sensibilities as possible.
http://www.novaroma.org/religio_romana/Saturnalia - A Winter Solstice Ritual
http://www.cs.utk.edu/~mclennan/BA/Saturnalia.html
Julian Society
Mailing list for The Julian Society.
http://groups.yahoo.com/group/JulianSociety/
The Julian Society
A non-denominational religious order dedicated to the restoration of paganism envisioned by the emperor Julian.
http://www.juliansociety.org/
Temple of Iarhibol
Dedicated to restoring the worship of the Iarhibol, the Sun God of ancient Pagan Palmyra and Dura Europos.
http://www.geocities.com/temple_of_iarhibol/
Temple of Religio Romana
A religious organization existing for the purposes of enlightenment and assistance in the areas of faith, personal growth, and education of the ancient Roman culture.
http://religioromana.net/index.htm
Chapel of Antinous the Healer
A Chapel of the Ecclesia Antinoi, honoring the memory and beauty and the eight mysteries of Antinous of Bithynia.
http://www.angelfire.com/journal/saadaya/House.html
Collegium Religionis Societatis Viae Romanae
Dedicated to the study and practice of the Religio Romana, emphasizing the most recent historical research into the Religio Romana and other pagan traditions that influenced it.
http://home.scarlet.be/mauk.haemers/collegium_religionis/
