This category is for organizations designated as terrorist by the United States Department of State.

This designation does not necessarily mean that these organizations are designated as terrorist in the countries in which they operate. For example, the 32 County Sovereignty Committee and Republican Sinn Féin are deemed terrorist organizations by the U.S. State Department, despite being legal political parties that are active in the United Kingdom and the Republic of Ireland. (This is incorrect, according to: http://en.wikipedia.org/wiki/Continuity_IRA, "The Continuity Irish Republican Army (CIRA) is an Irish republican paramilitary organisation that emerged from a split in the Provisional IRA in 1986. It considers itself a direct continuation of the Irish Republican Army (the army of the unilaterally-declared 1919–1922 Irish Republic) that fought in the Irish War of Independence; as such, its supporters regard it as the national army of the Irish Republic occupying all 32 counties of the island of Ireland. It is designated as an illegal organisation in the Republic of Ireland and a designated terrorist organisation in the United Kingdom and the United States.")