There are two major religions in Eritrea:
Christianity (four
denominations) and
Islam (only the Sunni
school). However, the number of adherents is subject to debate. • In the 2010 Eritrea Population and Health Survey, conducted by the Eritrean National Statistics Office and the
Fafo Institute for Applied International Studies, 61.4% of all survey respondents reported being Christian (56.3% Orthodox, 4.2% Catholic, and 0.8% Protestant), with 38.4% reporting being Muslim, and the remaining 0.2% adhering to traditional faiths. Among women, who made up 87.6% of those surveyed, 60.7% reported being Christian and 39.0% Muslim. In a similar survey of Eritrean women conducted in 2002, 63.0% reported being Christian (57.8% Orthodox, 4.6% Catholic, and 0.7% Protestant), with 36.6% reporting being Muslim. • In 2015, Pew Research estimated that, by 2020, 62.9% of the population would be
Christian, while 36.6% would be
Muslim, with the rest following other religions. • The
United States Commission on International Religious Freedom's 2021 annual report states that the country's population is "split in half between Christians (49 percent) and Muslims (49 percent)". • According to ACS-Italia estimate, around 52% of Eritrea's population in 2017 adhered to Islam, and 46% followed Christianity, with the remaining 2% of residents practicing other religions, including
traditional faiths and
animism. The Aksumites erected a number of large
stelae, which served a religious purpose in pre-Christian times. Over 200 years after the kingdom's formation, it adopted
Christianity under King
Ezana. Eritrea was also one of the first Islamic settlements in Africa, as a group of Muslims facing persecution in
Mecca migrated to the Kingdom of Aksum.
Islam spread to Ethiopia and Eritrea around 615 AD with the arrival of
Uthman ibn Affan, one of the
Sahabah (companions) of the
Islamic prophet Muhammad. Uthman had been driven out of
Hejaz and found shelter at
Axum in the
Tigray Region of Ethiopia under the protection of the Axumite king,
Aṣḥama ibn Abjar. . In 1941, Italian soldiers took refuge in the tree from British planes. The tree was hit but the Italians and the shrine survived. Another great power came in the person of the
Imam of
Harar in Ethiopia,
Ahmad ibn Ibrahim al-Ghazi, also known as Ahmad Gurey or Gragn. Al-Ghazi led Muslim forces consisting of
Somali,
Harari,
Oromo,
Afar,
Saho,
Argobba,
Hadiya,
Silte and
Gurage soldiers from present-day Ethiopia, Eritrea,
Djibouti and
Somalia. In 1530 he began to attack the plateau. Within four years he laid waste to the majority of the Christian highlands, including the Tigray Region of Ethiopia. Only by surrender and conversion could people save their lives. Only the intervention of the Portuguese transformed the flow of events. They landed at
Massawa in 1541 and helped the Eritreans and Ethiopians to drive the Imams forces from the plateau. The Muslim forces dispersed, retreated and disappeared.
Catholicism was first brought to Eritrea by the
Jesuits in 1600. In 1632, the order was expelled from Eritrea for wanting to convert the country (an Orthodox country) to Catholicism. In the 19th century, the Italians began to bring Eritrea under their sphere of influence and introduced Roman Catholicism again. Missionaries appeared in the 19th century and established the
Lutheran and
Evangelical churches. These organizations have been allowed to continue to practice. New groups, however, have been discouraged from establishing a base in Eritrea. During
Italian colonialism, Catholicism became quite widespread, mostly due to Italian settlement in Eritrea. At the beginning of the 1940s nearly 28% of the population of
Italian Eritrea were Catholic, most of whom were
Italians. However, the number of Italians in Eritrea decreased at the end of
WWII under
British military administration (which also had religious violence between Christians and Muslims), and especially after Eritrea came under Ethiopian authority in 1950, thus diminishing
the Catholic Church's importance. Under
Ethiopian rule and the
Eritrean War of Independence, the role of the
Ethiopian Orthodox Church was strengthened, and it legitimized Ethiopian rule in Eritrea, which was controversial. Ethiopian propaganda framed the
Eritrean struggle for liberation as a "Muslim separatist movement", which strengthened feelings among Eritrean Muslims that the Ethiopian Orthodox Church was a tool of the Ethiopian state. During
Derg rule, the Ethiopian state had a policy of
state atheism, which was unpopular, especially in Eritrea. However, the Derg also co-opted many religions despite repressing them, such as with the Ethiopian Orthodox Church. They also for the first time recognized
Islam in Ethiopia, co-opting it with the newly founded
Ethiopian Islamic Affairs Supreme Council. ==Christianity==