Bible believer (also Bible-believer, Bible-believing Christian, Bible-believing Church) is a self-description by conservative Christians to differentiate their teachings from others who see non- or extrabiblical tradition as higher or equal in authority.

In normal usage, "Bible believer" means an individual or organisation that believes the Christian Bible is true in some significant way. However, this combination of words is given a unique meaning in fundamentalist Protestant circles, where it is equated with the belief that the Christian Bible "contains no theological contradictions, historical discrepancies, or other such 'errors'", otherwise known as biblical inerrancy.