The following table lists the names of Breton communities which have concluded town twinning agreements with communities in Ireland:
| Ireland | Brittany | |||
|---|---|---|---|---|
| Headford | Áth Cinn | Le Faouët | Ar Faoued | |
| Athlone | Baile Átha Luain | Chateaubriant | Kastell-Briant | |
| Ballyheigue | Baile Uí Thaidhg | Gosné | Goneg | |
| Mainistir | Ballinamore | Béal an Átha Móir | Plouézec | Ploueg-ar-Mor |
| Ballinhassig | Béal Átha an Cheasaigh | Pleudaniel | Planiel | |
| Ballyhaunis | Béal Átha hAmhnais | Guilers | Gwiler-Leon | |
| Belturbet | Béal Tairbirt | Cavan | Kawan | |
| Bantry | Beanntraí | Pont-l'Abbé | Pont an Abad | |
| Crosshaven | Bun an Tabhairne | Pleumeur-Bodou | Pleuveur-Bodoù | |
| Castlebar | Caisleán an Bharraigh | Auray | An Alre | |
| Castlecomer | Caisleán an Chumair | Penvénan | Perwenan | |
| Castlegregory | Caisleán Ghriaire | Saint-Colomban (Brittany) | Sant-Koulman | |
| Carrick on Suir | Carraig na Siúire | Tregunc | Tregon | |
| Westport | Cathair na Mart | Plougastel-Daoulas | Plougastell-Daoulaz | |
| Cahersiveen | Cathair Saidhbhín | Pluvigner | Pleuwigner | |
| Kanturk | Ceann Toirc | Rostrenen | Rostrenenn | |
| Kilkee | Cill Chaoi | Plouhinec | Pleheneg | |
| Kilgarvan | Cill Garbháin | Tréglamus | Treglañviz | |
| Kilmacow | Cill Mhic Bhúith | Saint-Thurien | Sant-Turian | |
| Killorglin | Cill Orglan | Plouha | Plouha | |
| Kilrush | Cill Rois | Plouzané | Plouzane | |
| Kinvara | Cinn Mhara | Locoal-Mendon | Lokoal-Mendon | |
| Clifden | An Clochán | Sarzeau | Sarzav | |
| Clonakilty | Cloich na Coillte | Châteaulin | Kastellin | |
| Cobh | An Cóbh | Ploërmel | Ploermael | |
| Carrick on Shannon | Cora Droma Rúisc | Cesson-Sévigné | Saozon-Sevigneg | |
| Corofin | Cora Finne | Tonquédec | Tonkedeg | |
| Mountbellew-Moylough | An Creagán-Maigh Locha | Elliant | Eliant | |
| Drumshambo | Droim Seanbhó | Locquirec | Lokireg | |
| Dundalk | Dún Dealgan | Rezé | Reudied | |
| Dún Laoghaire | Dún Laoghaire | Brest | Brest | |
| Dunmore, County Galway | Dún Mór (Gaillimh) | Querrien | Kerien | |
| Dunmore East (Waterford) | An Dún Mór Thoir | Clohars-Carnoët | Kloar-Karnoed | |
| Galway | Gaillimh | Lorient | Breton: An Oriant | |
| Cork | Corcaigh | Rennes | Roazhon | |
| Lahinch | An Leacht | Arzon | Arzhon-Rewiz | |
| Wexford | Loch Garman | Couëron | Koeron | |
| Macroom | Maigh Chromtha | Bubry | Bubri | |
| Limerick | Luimneach | Quimper | Kemper | |
| Fermoy | Mainistir Fhear Maí | Ploemeur | Plañvour | |
| Mallow | Mala | Tréguier | Landreger | |
| Waterford | Port Láirge | Saint-Herblain | Sant-Ervlan | |
| Charleville, County Cork | Rath Luirc | Plouaret | Plouared | |
| Ringaskiddy | Rinn an Scidígh | Hengoat | Hengoad | |
| Skibbereen | An Sciobairín | Penmarch | Penmarc'h | |
| Shannon | Sionainn | Guingamp | Gwengamp | |
| Sligo | Sligeach | Crozon | Kraozon | |
| An Spidéal | An Spidéal | Plougrescant | Plougouskant | |
| Millstreet | Sráid an Mhuilinn | Pommerit-le-Vicomte | Pañvrid-ar-Beskont | |
| Roundwood | An Tochar | Spézet | Speied | |
| Monivea | Mhuine an Mheá | Tréméven, Finistère | Tremeven-Kemperle | |