There are twelve volunteer mountain rescue teams (MRTs) serving the public in this island and members of MRI:
- Donegal MRT (covering the mountains of County Donegal ie Slieve League, Bluestack Mountains, Errigal, Muckish, Derryveagh Mountains and the Inishowen Peninsula)
- North West MRT (covering the mountains of the north-west of Northern Ireland)
- Mourne MRT (covering the Mourne Mountains)
- Dublin & Wicklow MRT (covering the mountains of Counties Dublin and Wicklow)
- Glen of Imaal MRT (covering the mountains of south Co. Dublin, Co. Wicklow, east Co. Kildare and north Co. Wexford)
- South-Eastern Mountain Rescue Association (covering the mountains of the south-east (including the Galtee Mountains, the Blackstairs, the Comeraghs, the Knockmealdowns and the Slieve Blooms)
- Tramore Cliff and Mountain Rescue Team (covering the cliffs along the southern coast)
- Kerry MRT (covering the mountainous areas of Counties Cork and Kerry, primarily the peninsulas of Beara, Iveragh and Dingle)
- Galway MRT (covering the mountainous areas of counties Galway and Clare)
- Mayo MRT (covering the mountainous areas of County Mayo)
- Sligo/Leitrim MRT (covering the mounainous areas of counties Sligo and Leitrim)
- Search and Rescue Dogs Association (This association is organised on a national basis to provide the additional resource of trained search dog teams throughout the country)
- Another MRT is maintained by the Police Service of Northern Ireland. It covers the mountainous areas of Northern Ireland.
- Each team has long-standing arrangements whereby it can be called out by a neighbouring team to assist them when required.
- Some teams have more developed arrangements whereby call-outs in particular areas are dealt with by the teams on a joint or allocated basis. This has developed in areas of high call-out rates such as the Dublin/Wicklow mountains which are close to areas of high population density.
- MRI is working to develop experience and knowledge of multi-team operations. Examples of this are our National Operation at Croagh Patrick pilgrimage in July when thousands of pilgrims climb the mountain on Reek Sunday and our Regional Exercises where all the teams come together to deal with an emergency scenario.