Romuva

From Wikipedia: "Romuva is a Baltic ethnic religious organization, reviving the religious practices of the Lithuanian people before their Christianization. Romuva is a folk religion community that claims to continue living Baltic pagan traditions which survived in folklore and customs.

Romuva primarily exists in Lithuania but there are also congregations of adherents in Australia, Canada, the United States, and England. There are also Romuvans in Norway, for whom a formal congregation is being organized. Believers of Baltic pagan faiths also exist in other nations, including Dievturība in Latvia. Practising the Romuva faith is seen by many adherents as a form of cultural pride, along with celebrating traditional forms of art, retelling Baltic folklore, practising traditional holidays, playing traditional Baltic music, singing traditional dainas or hymns and songs as well as ecological activism and stewarding sacred places."

An introduction to Lithuanian Paganism may be found here, with a version in English here.