Religious positions on human cloning are pluralistic in modes of argument and conclusions. Some religious thinkers argue that cloning a human is immoral and propose a ban on human cloning. Some other religious thinkers contend that human cloning could be morally justified under some circumstances.

The Roman Catholic Church expressed a vigorous opposition to the procedure and a Vatican editorial denounced the research as "intrinsically perverse" Catholic moral theologians invoked norms of individuality, dignity and wholeness in condemning this research while many Conservative Protestant scholars held that this research contravened basic notions of personhood such as freedom, the sanctity of life, and the image of God, and some other Protestant scholars noted its potential medical benefits and advocated careful regulation rather than prohibition.

Some Jewish and some Islamic thinkers (Shi`ite) encourage continuing laboratory research on the possibility of cloning human beings only in pursuit of a worthy objective. The Islamic scholars emphasize that every scientific discovery is ultimately a revelation of the divinely ordained creation.

In this research cloning scientific bases and Shi`ite authorities beliefs (as a major religious group who agree with human cloning) will be discussed.