Religious assimilation refers to the adoption of a majority or dominant culture's religious practices and beliefs by a minority or subordinate culture. It is an important form of cultural assimilation.
Religious assimilation includes the religious conversion of individuals from a minority faith to the dominant faith. It can also include the religious indoctrination of children into a dominant religion by their converted parents. However, religious assimilation need not involve wholesale adoption of a dominant religious belief system by a minority; the concept is broad enough to include alterations in the frequency of religious participation to match that of the dominant culture. Indeed, religious assimilation among immigrant groups most commonly involves such minor changes, rather than sweeping change in religious belief systems.[1]: 134