Irreligion in Bulgaria

Religion in Bulgaria (2011 census)
  1. Bulgarian Orthodoxy (59.5%)
  2. Unaffiliated (9.3%)
  3. Islam (7.9%)
  4. Protestantism (0.9%)
  5. Catholicism (0.7%)
  6. Not declared (21.8%)

Irreligion in Bulgaria pertains to atheism, agnosticism, and secularism among the citizens of Bulgaria. Irreligion is a minority religious position in Bulgaria. Making up approximately 5-10% of Bulgarians, irreligion is the second most common religious stance after Eastern Orthodoxy. Irreligion in Bulgaria is closely tied to the history of Marxism–Leninism and Soviet rule in the country during the 20th century.