Nonconformist

noun

1. One who does not conform to, or refuses to be bound by, accepted beliefs, customs, or practices.
2. A member of a Protestant church not observing the doctrines, usage, or polity of a national or established church, especially the Church of England.
3. One who does not conform to some law or usage, especially to some ecclesiastical law.
4. Specifically, in English history, one of those clergymen who refused to subscribe the Act of Uniformity passed in 1662, demanding “assent and consent” to everything contained in the Book of Common Prayer, and by extension any one who refuses to conform to the order and liturgy of the Church of England. See dissenter, 2.
5. In entomology, the noctuid moth Xylina zinckeni: an English collectors' name, applied in distinction from X. Conformis.