The East Tyrone Brigade of the Provisional Irish Republican Army (IRA), also known as the Tyrone/Monaghan Brigade was one of the most active republican paramilitary groups in Northern Ireland during "the Troubles". It is believed to have drawn its membership from across the eastern side of County Tyrone as well as north County Monaghan and south County Londonderry.

James 'Jim' Lynagh was a member of the East Tyrone Brigade of the Provisional Irish Republican Army (IRA), from Monaghan Town in the Republic of Ireland, who was killed by British special forces whilst attacking an R.U.C. station in Northern Ireland.