Drummully or Drumully is an electoral division (ED) in the west of County Monaghan in Ireland. Known as the Sixteen Townlands to locals and as Coleman's Island or the Clonoony salient to the security forces, it is a pene-enclave almost completely surrounded by County Fermanagh in Northern Ireland. Since the establishment of the Irish Free State in 1922, the Fermanagh–Monaghan border has formed part of the international border between the United Kingdom and what is now the Republic of Ireland, leaving Drummully as a practical enclave, connected to the rest of the republic only by an unbridged 110-metre (360 ft) length of the Finn River. The area is accessed via the Clones–Butlersbridge road, numbered N54 in the Republic and A3 in Northern Ireland.