| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
451  | Mullingar  An Muileann gCearr,Mullingar | Ireland, Leinster County Westmeath | seat of a second-order administrative division population 17,262, elevation 101m | N 53° 31′ 28'' | W 7° 20′ 18'' |
452  | Mullaghcleevaun Mullach Cliabhain,Mullach Cliabháin,Mullaghcleevaun,jbl mwlajklyvawn,جبل مولاجكليڤاون | Ireland, Leinster County Wicklow | mountain elevation 847m | N 53° 6′ 12'' | W 6° 24′ 24'' |
| 453 | Mullagh An Mullach,Mullagh | Ireland, Ulster Cavan | populated place population 1,137 | N 53° 48′ 47'' | W 6° 57′ 5'' |
| 454 | Muff Magh,Muff | Ireland, Ulster Donegal | populated place population 1,226 | N 55° 4′ 0'' | W 7° 16′ 0'' |
| 455 | Moycullen Maigh Cuilinn | Ireland, Connacht Galway | populated place population 1,704 | N 53° 20′ 16'' | W 9° 10′ 48'' |
| 456 | Moville Bun an Phobail,Mouvil,Movilje,Moviljė,Movill,Moville,movuiru,Мовилл,Моувил,モーヴィル | Ireland, Ulster Donegal | populated place population 1,481 | N 55° 11′ 29'' | W 7° 2′ 19'' |
| 457 | Mountrath Maighean Ratha,Maighean Rátha,Mauntrat,Mauntratas,Mountrath,Mountratkh,Маунтрат,Моунтратх | Ireland, Leinster Laois | populated place population 1,661 | N 52° 59′ 56'' | W 7° 28′ 22'' |
| 458 | Mountmellick Mauntmelik,Mauntmelikas,Mauntmellik,Mointeach Milic,Mountmellick,Móinteach Mílic,mang te mei li ke,М... | Ireland, Leinster Laois | populated place population 3,547 | N 53° 6′ 49'' | W 7° 19′ 12'' |
| 459 | Moroe Maigh Rua,Moroe | Ireland, Munster Limerick | populated place population 1,377 | N 52° 39′ 4'' | W 8° 23′ 46'' |
| 460 | Moone Maoin,Mone,Moone,Mun,Моне,Мун | Ireland, Leinster Co Kildare | populated place population 1,195 | N 52° 58′ 32'' | W 6° 48′ 54'' |
| 461 | Mooncoin Moin Choinn,Mooncoin,Munkojn,Móin Choinn,Мункойн | Ireland, Leinster County Kilkenny | populated place population 1,175 | N 52° 17′ 22'' | W 7° 14′ 54'' |
| 462 | Monkstown Baile na Manach | Ireland, Leinster Dún Laoghaire-Rathdown | populated place population 5,555 | N 53° 17′ 35'' | W 6° 9′ 11'' |
| 463 | Monasterevin Mainistir Eimhin,Mainistir Eimhín,Monasterevan,Monasterevin,Монастеревин | Ireland, Leinster Co Kildare | populated place population 4,246 | N 53° 8′ 26'' | W 7° 3′ 59'' |
| 464 | Cliffs of Moher Acantilados de Moher,Aillte an Mhothair,Cliffs of Moher,Falaises de Moher,Klify Moher,Klippen van Mo... | Ireland, Munster Clare | cliff(s) elevation 155m | N 52° 57′ 59'' | W 9° 25′ 59'' |
| 465 | Moate Moate | Ireland, Leinster County Westmeath | populated place population 2,763 | N 53° 33′ 0'' | W 7° 43′ 0'' |
| 466 | Mitchelstown Baile Mhisteala,Baile Mhistéala,Michulstaun,Mitcelstaunas,Mitchelstaun,Mitchelstown,Mitčelstaunas,mi... | Ireland, Munster Cork | populated place population 3,740 | N 52° 15′ 57'' | W 8° 16′ 5'' |
| 467 | Marino An Mairine,An Mairíne | Ireland, Leinster Dublin City | section of populated place population 11,023 | N 53° 22′ 12'' | W 6° 14′ 11'' |
| 468 | Manorhamilton Cluainin,Cluainin Ui Ruairc,Cluainín,Cluainín Ui Ruairc,Manorhamilton,Manorhamiltonas,Manorkhamilton... | Ireland, Connacht Leitrim | populated place population 1,466 | N 54° 18′ 23'' | W 8° 10′ 34'' |
469  | Mannin Lake Manin Lake,Mannin Lake,Mannin Lough | Ireland, Connacht County Mayo | lake | N 53° 48′ 0'' | W 8° 49′ 0'' |
| 470 | Lusk Lask,Lusca,Lusk,Luskas,lu si ke,rasuku,Ласк,Лъск,لسک، ڈبلن,ラスク,卢斯克 | Ireland, Leinster Fingal | populated place population 7,786 | N 53° 31′ 38'' | W 6° 9′ 51'' |
| 471 | Loughlinstown Baile Ui Lachnain,Baile Uí Lachnáin,Lokhlinstaun,Loughlinstown,Лохлинстаун | Ireland, Leinster Dún Laoghaire-Rathdown | populated place population 3,665 | N 53° 14′ 38'' | W 6° 7′ 59'' |
| 472 | Longwood Longwood,Maigh Dearmhai,Maigh Dearmhaí | Ireland, Leinster Meath | populated place population 1,581 | N 53° 27′ 14'' | W 6° 55′ 19'' |
| 473 | Lismore Lios Mor,Lios Mór,Lismor,Lismore,Lismorė,li si mo er,lysmwr,rizumoa,Λίσμορ,Лисмор,Լիսմոր,ליסמור,リズモア... | Ireland, Munster Waterford | populated place population 1,347 | N 52° 8′ 12'' | W 7° 55′ 51'' |
| 474 | Lifford Leifear,Lifford | Ireland, Ulster Donegal | seat of a second-order administrative division population 1,658 | N 54° 49′ 55'' | W 7° 29′ 1'' |
| 475 | Strandhill An Leathros,Larass,Strandhill,Strandkhil,Strandkhill,Страндхил,Страндхилл,სტრანდჰილი | Ireland, Connacht County Sligo | populated place population 1,753 | N 54° 16′ 19'' | W 8° 35′ 36'' |
| 476 | Lannagh Lough Castlebar Lough,Lannagh Lough,Lough Lanach | Ireland, Connacht County Mayo | lake | N 53° 50′ 20'' | W 9° 20′ 47'' |
| 477 | Lanesborough Beal Atha Liag,Béal Átha Liag,Lanesborough,Lanesborough-Ballyleague | Ireland, Leinster Co Longford | populated place population 1,454 | N 53° 40′ 0'' | W 7° 59′ 0'' |
| 478 | Knocktopher Cnoc an Tochair,Cnoc an Tóchair,Knockstopher,Knocktofer,Knocktopher,Knocktover,Noktofer,Ноктофер | Ireland, Leinster County Kilkenny | populated place population 166 | N 52° 29′ 11'' | W 7° 13′ 3'' |
| 479 | Knock An Cnoc,Cnoc Mhuire,Knock,NOC | Ireland, Connacht County Mayo | populated place population 972 | N 53° 47′ 26'' | W 8° 55′ 16'' |
| 480 | Kinnegad Cionn Atha Gad,Cionn Átha Gad,Kinegad,Kinegadas,Kinnegad,Kinnegad - Cionn Atha Gad,Kinnegod,Кинегад,... | Ireland, Leinster County Westmeath | populated place population 2,662 | N 53° 27′ 8'' | W 7° 5′ 59'' |
| 481 | Kinlough Cionn Locha,Kinlokh,Kinlough,Kinlougkh,kinrau,Кинлоугх,Кинлох,კინლოხი,キンラウ | Ireland, Connacht Leitrim | populated place population 1,032 | N 54° 27′ 0'' | W 8° 17′ 0'' |
| 482 | Kingscourt Dun An Ri,Dun an Ri,Dun na Ri,Dún An Ri,Dún an Rí,Dún na Rí,Kingscourt,Kingskort,Кингскорт | Ireland, Ulster Cavan | populated place population 2,499 | N 53° 54′ 29'' | W 6° 48′ 20'' |
| 483 | Kilworth Cill Uird,Kilworth | Ireland, Munster Cork | populated place population 1,055 | N 52° 10′ 35'' | W 8° 14′ 39'' |
| 484 | Kiltamagh Coillte Mach,Kiltama,Kiltamagh,Kiltamagkh,Kiltimagh,qylmyygh,Килтама,Килтамагх,קילמייגה,კილტიმა | Ireland, Connacht County Mayo | populated place population 1,069 | N 53° 51′ 0'' | W 9° 0′ 0'' |
| 485 | Kilrush Cill Rois,Kilrash,Kilrush,ji er la shen,kirurasshu,Килраш,Килруш,キルラッシュ,基尔拉什 | Ireland, Munster Clare | populated place population 2,719 | N 52° 38′ 24'' | W 9° 29′ 6'' |
| 486 | Kilmallock Cill Mocheallog,Cill Mocheallóg,Kilmailock,Kilmallock | Ireland, Munster Limerick | populated place population 1,688 | N 52° 24′ 0'' | W 8° 34′ 38'' |
| 487 | Killumney Cill na hOmnai,Cill na hOmnaí,Killumney | Ireland, Munster Cork | populated place population 1,132 | N 51° 52′ 20'' | W 8° 38′ 52'' |
| 488 | Killucan Cill Liucainne,Cill Liúcainne,Killucan,Killucan-Rathwire | Ireland, Leinster County Westmeath | populated place population 1,370 | N 53° 30′ 51'' | W 7° 8′ 31'' |
| 489 | Killorglin Cill Orglan,Killorglin,Kilorglin,Kilorglinas,Киллорглин,Килорглин | Ireland, Munster Co Kerry | populated place population 2,199 | N 52° 6′ 0'' | W 9° 47′ 0'' |
| 490 | Killaloe Cill Dalua,Kilalo,Kiljaloe,Kiljaloė,Killalo,Killaloa,Killaloe,ji la lu,kiraro,Килало,Киллало,קילאלו,... | Ireland, Munster Clare | populated place population 1,484 | N 52° 48′ 24'' | W 8° 26′ 37'' |
| 491 | Kilkee Cill Chaoi,Kilke,Kilkee,Kilki,Kilkė,ji er ji,kiruki,Килке,Килки,キルキー,基爾基 | Ireland, Munster Clare | populated place population 1,214 | N 52° 40′ 47'' | W 9° 38′ 36'' |
| 492 | Kilcullen Cill Chuillinn,Kilcullen,Kilkallen,Килкаллен | Ireland, Leinster Co Kildare | populated place population 3,710 | N 53° 7′ 49'' | W 6° 44′ 40'' |
| 493 | Kilcoole Cill Chomhghaill,Kilcoole,Kilkul,klkwl,Килкул,کلکول | Ireland, Leinster County Wicklow | populated place population 4,239 | N 53° 6′ 10'' | W 6° 3′ 54'' |
| 494 | Kilbeggan Cill Bheagain,Cill Bheagáin,Kilbegan,Kilbeganas,Kilbeggan,kirubegan,Килбеган,Килбегган,キルベガン | Ireland, Leinster County Westmeath | populated place population 1,288 | N 53° 22′ 10'' | W 7° 30′ 12'' |
| 495 | Lough Keel Keele,Loch Caol,Lough Keel | Ireland, Ulster Donegal | lake | N 55° 3′ 40'' | W 7° 45′ 42'' |
| 496 | Kanturk Ceann Toirc,Kantjork,Kanturk,Kanturkas,kantaku,qntwrq,Кантърк,Кантёрк,קנטורק,カンターク | Ireland, Munster Cork | populated place population 2,350 | N 52° 10′ 0'' | W 8° 54′ 0'' |
| 497 | Johnstown Baile Eoin,Dzhonstaun,Johnstown,jonzutaun,Джонстаун,ジョンズタウン | Ireland, Leinster Co Kildare | populated place population 1,005 | N 53° 14′ 18'' | W 6° 37′ 20'' |
| 498 | Inishcrone Inis Crabhann,Inishcrone,Inniscrone | Ireland, Connacht County Sligo | populated place population 1,156 | N 54° 12′ 57'' | W 9° 5′ 31'' |
499  | Iar Connacht Iar Connacht,Iar Connaught,Jar Connaught | Ireland, Connacht Galway | area | N 53° 22′ 0'' | W 9° 21′ 0'' |
| 500 | Gweedore Gaoth Dobhair,Guidor,Gvidor,Gweedore,Krokh'li,gui duo er,guuido,gwwydwr,gwydwr,Гвідор,Гуидор,Крохьли... | Ireland, Ulster Donegal | populated place population 4,200 | N 55° 3′ 1'' | W 8° 13′ 55'' |
by