Christian Fundamentalism is a movement within conservative Christianity that transcends national boundaries and involves various denominational groups. The majority of its representation is in the U.S. Christian Fundamentalists place strong emphasis on the inspiration and authority of the Bible and insist that it be accepted in total and without internal error. This belief is commonly referred to as the belief in inerrancy.

Although people have held to some of Fundamentalism's basic principles since early biblical history, the actual name was unknown to people before 1900. The modern movement was birthed out of a series of Conferences organized by evangelicals in the late 1800s and early 1900s. A series of pamphlets entitled "The Fundamentals" followed the conference. These pamphlets recorded strong objections to modernism in the Church, the movement toward higher criticism of the Bible, and the liberal tendency to elevate a scientific worldview over a Biblical one.

Curtis Lee Laws, a Baptist man, is believed to have coined the term "fundamentalist" in 1920. He referred to anyone who strongly defended the "Fundamentals" as being a "fundamentalist." Another source claims that Harry Fosdick, a liberal theologian, popularized the term in an article criticizing the movement.

Christian Fundamentalism is a movement within conservative Christianity that transcends national boundaries and involves various denominational groups. The majority of its representation is in the U.S. Christian Fundamentalists place strong emphasis on the inspiration and authority of the Bible and insist that it be accepted in total and without internal error. This belief is commonly referred to as the belief in inerrancy.

A true Fundamentalist interprets everything in the Bible literally and seeks to be completely obedient to its content, regardless of the implications. The aforementioned conviction can be called "Theological Fundamentalism." It is a movement born out of a reaction against liberalism in the Church. Seeking to preserve the core of religion and its influence upon society, Fundamentalists separate themselves from societal trends that appear to be against morality and conservatism. In its early push, followers strongly opposed liberalizing trends in German biblical criticism and the subtle acceptance of Darwinian theories of evolution.

In addition to Theological Fundamentalism, another category can be labeled "Political Fundamentalism." Political Fundamentalists combine conservative theological conviction and personal commitment to engage in combating worldly systems and vices using the political realm of society. One of the most widely known representations of Political Fundamentalism is the Moral Majority movement of the 1980's.

Christian Fundamentalism is to be distinguished from Muslim Fundamentalism (Islamism).