Protestant Irish nationalists refers to adherents of Protestantism in Ireland who also support Irish nationalism. Protestants have played a rather large role in the development of Irish nationalism since the eighteenth century, despite most Irish nationalists historically being from the Irish Catholic majority, as well as most Irish Protestants usually tending toward unionism in Ireland. Protestant nationalists (or patriots, particularly before the mid-19th century) have consistently been influential supporters and leaders of various movements for the political independence of Ireland from Great Britain. Historically, these movements ranged from supporting the legislative independence of the Parliament of the Kingdom of Ireland; to a form of home rule within the United Kingdom of Great Britain and Ireland, to complete independence in an Irish Republic, and (since the partition of Ireland) a United Ireland.
Despite their relatively small numbers, individual Protestants have made important contributions to key events in Irish nationalist history, such as Wolfe Tone during the 1798 rebellion, Charles Stewart Parnell and the Home Rule movement, and Robert Erskine Childers and the 1916 Easter Rising.
Today the relationship between Protestants and Irish nationalism differs sharply between Northern Ireland and the Republic of Ireland. In the Republic, the vast majority of Protestants accept and support the independence of Ireland, even if there have been tensions over the central role of the Catholic Church in independent Ireland. The only explicitly unionist political movement of any significance is The Reform Group, a pressure group which advocates that the Republic of Ireland should rejoin the Commonwealth, but does not contest any elections. In Northern Ireland, however, the vast majority of Ulster Protestants are unionist and vote for unionist parties. In 2008, only 4% of Protestants in Northern Ireland thought the long-term policy for Northern Ireland should be unification with the Republic of Ireland, whereas 89% said it should be to remain in the United Kingdom.