The Tithe War (Irish: Cogadh na nDeachúna) was a campaign of mainly nonviolent civil disobedience, punctuated by sporadic violent episodes, in Ireland between 1830 and 1836 in reaction to the enforcement of tithes on the Roman Catholic majority for the upkeep of the established state church, the Church of Ireland. Tithes were payable in cash or kind and payment was compulsory, irrespective of an individual's religious adherence.