Kanisa la kitaifa ni Kanisa la Kikristo linaloambatana na kabila au taifa fulani kiasi cha kuwa sehemu muhimu ya utamaduni wake. La kwanza lilikuwa Kanisa la Kitume la Armenia. Suala hilo lilijadiliwa hasa katika karne ya 19, wakati utaifa ulipostawi. Pamoja na hayo, aina hiyo ya Ukristo inadumu hai hasa Uingereza na Skandinavia, pengine kama dini rasmi ambayo nchi inaipa haki za pekee katika sheria zake Karl Barth alisema ni uzushi "kumtaifisha" Mungu wa Ukristo, hasa pale ambapo Kanisa la kitaifa linahimiza au kubariki vita dhidi ya mataifa mengine ya Kikristo, ilivyotokea katika Vita vya kwanza vya dunia. Dag Thorkildsen, "Scandinavia: Lutheranism and national identity" in World Christianities, c. 1815-1914, vol. 8 of The Cambridge history of Christianity, eds. Sheridan Gilley, Brian Stanley, Cambridge University Press, 2006, ISBN 978-0-521-81456-0, pp. 342–358. Shadid, W. A. R. (1 January 1995). Religious Freedom and the Position of Islam in Western Europe. Peeters Publishers, 11. ISBN 9789039000656. “Denmark has declared the Evangelical Lutheran church to be that national church (par. 4 of the Constitution), which corresponds the fact that 91.5% of the population are registered members of this church.