Irreligion in South Korea is common, with 56% percent of the population saying they are not affiliated with a religion, as of the 2015 national census.[1] South Korea also has the 5th largest population of atheists in the world, according to a 2012 Gallup International poll, which found that 15% of South Koreans were "convinced atheists."[3] According to a 2021 Gallup Korea poll, 60% identify with no religion, 17% with Protestantism, 16% with Buddhism, 6% with Catholicism, and 1% with other religions.[4]