祓，是东亚传统宗教如（道教、日本神道、朝鲜巫教等）中为了消除霉气进行的洁净仪式。东亚传统认为霉气令人不洁与生病，为了除去霉气，就由宗教人员（如道士、神官等）进行用水洗濯恢复洁净的仪式。这仪式就是祓除。祓与褉合称为「祓褉」。在日本，参加丧礼后的人也由神官进行盐祓。邪马台国的倭人在丧葬后有洗濯习惯。进伊势神宫的人也要禊后才可入。

Harae or harai (祓 or 祓い) is the general term for rituals of purification in Shinto. Harae is one of four essential elements involved in a Shinto ceremony. The purpose is the purification of pollution or sins (tsumi) and uncleanness (kegare). These concepts include bad luck and disease as well as guilt in the English sense.