The Proclamation of the Republic, also known as the 1916 Proclamation or the Easter Proclamation, was a document issued by the Irish Volunteers and the Irish Citizen Army during the Easter Rising in Ireland, which began on 24 April 1916. In it, the Military Council of the Irish Republican Brotherhood, writing as the "Provisional Government of the Irish Republic," proclaimed Ireland's independence from the United Kingdom. The reading of the proclamation by Patrick Pearse outside the General Post Office (GPO) on Sackville Street, Dublin's main thoroughfare, marked the beginning of the Rising. The proclamation was modelled on a similar independence proclamation issued during the 1803 rebellion by Robert Emmet.

The Irish Volunteers, also known as the Irish Volunteer Force or the Irish Volunteer Army, was a paramilitary organisation established in 1913 by nationalists and republicans in Ireland. It was ostensibly formed in response to the formation of its Irish unionist/loyalist counterpart the Ulster Volunteers in 1912, and its declared primary aim was "to secure and maintain the rights and liberties common to the whole people of Ireland". Its ranks included members of the Conradh na Gaeilge, Ancient Order of Hibernians, Sinn Féin and the Irish Republican Brotherhood. Increasing rapidly to a strength of nearly 200,000 by mid-1914, it split in September of that year over John Redmond's support for the British war effort during World War I, with the smaller group opposed to Redmond's decision retaining the name "Irish Volunteers".