What religion do most Icelanders adhere to?

Icelanders have freedom of religion guaranteed under the Constitution, although the Church of Iceland, a Lutheran body, is the state church.

Approximately 80 percent of Icelanders legally affiliate with a religious denomination, a process that happens automatically at birth and from which they can choose to opt out. They also pay a church tax (sóknargjald), which the government directs to help support their registered religion, or, in the case of no religion, the University of Iceland.

The Registers Iceland keeps account of the religious affiliation of every Icelandic citizen. In 2017, Icelanders were divided into religious groups as follows:

72.4% Christianity

—60.9% Church of Iceland

—11.5% Other Christian

25.2% No religion

1.5% Ásatrúarfélagið

0.9% Others