The 83rd (County of Dublin) Regiment of Foot was a British Army line infantry regiment, which was formed in Ireland in 1793 for service in the French Revolutionary Wars. The regiment served in the West Indies, South Africa and the Peninsular War, and after the end of the wars with France spent much of the nineteenth century in colonial garrisons. Among other service, the 83rd fought in the Ceylon Great Rebellion of 1817–18, the Canadian Rebellions of 1837, and the Indian Rebellion of 1857. As part of the Childers Reforms, the regiment was united with the 86th (Royal County Down) Regiment of Foot in 1881 to form the Royal Irish Rifles.