Detailed information about religious beliefs in Iceland.

Iceland is mostly dominated by Christianity, especially Lutheranism and Catholicism. In Icelandic history, Christianity was accepted in the 10th century. During the Viking period, Iceland was known as a pagan society that worshiped Odin, Thor and other Norse gods, while Norwegian King Olaf Tryggvason demanded that they accept Christianity. Therefore, Christianity was officially adopted in Iceland in 1000. Today, the majority of Iceland's population is Christian. The Church of Iceland is the official church of the country and is a Lutheran church. The Church of Iceland is state-funded and headed by the archbishop of Iceland. The church performs religious ceremonies such as marriages, baptisms and funerals. However, religious beliefs and church affiliation have declined in Iceland in recent years. Many people no longer identify as religious, and Icelandic society is becoming increasingly secular. The number of atheists or agnostics in Iceland is also increasing. Other religious beliefs also exist in Iceland. Catholicism is the second most common denomination of Christianity. There are also several types of Protestant denominations. Besides these, there are also small numbers of Muslims, Jews and people of other religious beliefs in Iceland. As a result, Iceland is mostly dominated by Christianity. The Church of Iceland is the official church of the country and is a Lutheran church. However, Icelandic society is becoming increasingly secular and religious affiliation is decreasing. Other religious beliefs also exist in Iceland, but are small in number.