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Religion

According to the 2021 census, 74.2% of residents of Lithuania were Catholics. Catholicism has been the main religion since the official Christianisation of Lithuania in 1387. The Catholic Church was persecuted by the Russian Empire as part of the Russification policies and by the Soviet Union as part of the overall anti-religious campaigns. During the Soviet era, some priests actively led the resistance against the Communist regime, as symbolised by the Hill of Crosses and exemplified by The Chronicle of the Catholic Church in Lithuania.

3.7% of the population are Eastern Orthodox, mainly among the Russian minority. The community of Old Believers (0.6% of population) dates back to the 1660s.

Protestants are 0.8%, of which 0.6% are Lutheran and 0.2% are Reformed. The Reformation did not impact Lithuania to a great extent as seen in East Prussia, Estonia, or Latvia. Before World War II, according to Losch (1932), the Lutherans were 3.3% of the total population. They were mainly Germans and Prussian Lithuanians in the Klaipėda Region (Memel territory). This population fled or was expelled after the war, and today Protestantism is mainly represented by ethnic Lithuanians throughout the northern and western parts of the country, as well as in large urban areas. Newly arriving evangelical churches have established missions in Lithuania since 1990.

Hinduism is a minority religion and a fairly recent development in Lithuania. Hinduism is spread in Lithuania by Hindu organizations: ISKCON, Sathya Sai Baba, Brahma Kumaris and Osho Rajneesh. ISKCON (Lithuanian: Krišnos sąmonės judėjimas) is the largest and the oldest movement as the first Krishna followers date to 1979. It has three centres in Lithuania: in Vilnius, Klaipėda and Kaunas. Brahma Kumaris maintains the Centre Brahma Kumaris in Antakalnis, Vilnius.

The historical communities of Lipka Tatars maintain Islam as their religion. Lithuania was historically home to a significant Jewish community and was an important centre of Jewish scholarship and culture from the 18th century until the eve of World War II. Of the approximately 220,000 Jews who lived in Lithuania in June 1941, almost all were killed during the Holocaust. The Lithuanian Jewish community numbered about 4,000 at the end of 2009.

Romuva, the neopagan revival of the ancient religious practices, has gained popularity over the years. Romuva claims to continue living pagan traditions, which survived in folklore and customs. Romuva is a polytheistic pagan faith, which asserts the sanctity of nature and has elements of ancestor worship. According to the 2001 census, there were 1,270 people of Baltic faith in Lithuania. That number jumped to 5,118 in the 2011 census.