Antireligion is opposition to religion or traditional religious beliefs and practices. It involves opposition to organized religion, religious practices or religious institutions. The term antireligion has also been used to describe opposition to specific forms of supernatural worship or practice, whether organized or not.
Antireligion is distinct from deity-specific positions such as atheism (the lack of belief in deities) and antitheism (an opposition to belief in deities); although "antireligionists" may also be atheists or antitheists. Unlike antitheism, antireligion is also against those religions that do not have deities, such as some sects of Buddhism and Jainism.