The dominant religion in Finland is Christianity, specifically Lutheranism, with roughly 66% of the population belonging to the Evangelical Lutheran Church of Finland. Yet Finland is also one of the most secular societies in Europe: nearly three in ten Finns report no religious affiliation, and formal church membership has fallen steeply since the turn of the century. The result is a country where Lutheran tradition still shapes the calendar and culture, even as active belief and weekly worship remain quietly understated.
Religious Demographics in Finland
Finland's religious make-up is overwhelmingly Christian by heritage, but increasingly secular in practice. The approximate breakdown is:
- Evangelical Lutheran Church of Finland: around 66% of the population, the national majority church.
- Unaffiliated or no religion: roughly 29%, a rapidly growing group.
- Finnish Orthodox Church: about 1.1%, concentrated historically in eastern Finland and Karelia.
- Other Christian denominations: around 1.5%, including Catholics, Pentecostals and Free Church congregations.
- Islam: approximately 0.8%, growing through immigration from Somalia, Iraq and other regions.
- Other faiths: roughly 1.6%, including small Jewish, Buddhist and Hindu communities.
The two largest non-Lutheran groups are, strikingly, the unaffiliated and the Orthodox — reflecting both modern secularisation and Finland's geographic position between West and East.
A Brief History of Faith in Finland
Christianity reached Finland in the Middle Ages, spread largely through Swedish influence during the Northern Crusades of the 12th century. Because Finland was part of the Kingdom of Sweden, the Protestant Reformation arrived in the 16th century, making Lutheranism the established faith. The Orthodox tradition, by contrast, took root in eastern Finland and Karelia through contact with Russia and the great medieval monasteries.
After Finland gained independence in 1917, both the Lutheran and the Orthodox churches were granted a special public-law status that they retain today, making Finland one of the few countries with two officially recognised national churches. The Lutheran Church played a notable role in forging national identity, particularly during the hardships of the Winter War against the Soviet Union in 1939–1940. Since the 2000s, however, membership has declined sharply, with tens of thousands of Finns formally leaving the church each year, often citing disagreement over social issues such as same-sex marriage.
Religious Life and Traditions
Finnish religious life tends to be private and restrained rather than demonstrative. Christmas (Joulu) is the most significant religious season, marked by Christmas Eve church services, the traditional sauna, and the moving custom of visiting family graves to light candles — leaving snow-covered cemeteries glowing with thousands of flames. Confirmation around age 15 remains a major rite of passage, with most teenagers attending a week-long confirmation camp (rippikoulu) that blends religious instruction with summer recreation.
Easter brings the playful tradition of virpominen, in which children dress as Easter witches and trade decorated willow branches for treats. In the far north, many among the Sami people and rural Lapland communities follow Laestadianism, a conservative Lutheran revival movement known for its emphasis on simplicity, large families and close-knit congregations. To explore more about the country's culture and geography, see our finland country guide.
Notable Religious Sites
Finland's churches range from medieval landmarks to bold modern architecture:
- Helsinki Cathedral: the white neoclassical Lutheran cathedral with green domes that crowns Senate Square and serves as a national symbol.
- Uspenski Cathedral: a red-brick Orthodox cathedral in Helsinki, often cited as the largest Orthodox church in Western Europe.
- Temppeliaukio Church: the famous "Rock Church," excavated directly into solid bedrock and prized for its acoustics as a concert venue.
- Turku Cathedral: dating to around 1300, the spiritual heart of Finnish Lutheranism and the country's most important medieval church.
- Kamppi Chapel of Silence: a curved wooden chapel in central Helsinki offering quiet reflection rather than scheduled services.
- Petäjävesi Old Church: a wooden church and UNESCO World Heritage Site showcasing Finnish vernacular craftsmanship.
Secularisation and Modern Belief
While most Finns are still baptised, married and buried within the Lutheran Church, regular attendance is low and church membership continues to fall. Surveys consistently rank Finland among Europe's most secular nations, with a large share of the population describing themselves as non-religious or only nominally Christian. At the same time, immigration has gradually diversified the religious landscape, expanding Muslim, Orthodox and other minority communities, especially in larger cities. The church remains influential in education, social welfare and national ceremonies, even as personal faith becomes increasingly a matter of individual choice.
Frequently Asked Questions
What is the main religion in Finland?
The main religion is Lutheran Christianity. Around 66% of Finns belong to the Evangelical Lutheran Church of Finland, which holds a special public-law status as a national church.
Is Finland a religious country?
Finland is culturally Christian but largely secular in practice. Although most people are church members, regular worship attendance is low, and nearly 29% of the population reports no religious affiliation.
Does Finland have an official state religion?
Finland has no single state religion, but two churches — the Evangelical Lutheran Church and the Finnish Orthodox Church — hold a special recognised status under public law, an unusual arrangement among European nations.
What other religions are practised in Finland?
Besides Lutheranism, Finland is home to the Finnish Orthodox Church, smaller Catholic, Pentecostal and Free Church groups, a growing Muslim community, and minority Jewish, Buddhist and Hindu populations.