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Rank | Population | City | Alternative city name(s) | Country |
| 32,001 | Lobatse | | Botswana |
| 62,735 | Lobnja | | Russia |
| 27,828 | Lobos | | Argentina |
| 14,283 | Locarno | | Switzerland |
| 9,225 | Loch Garman | Wexford | Ireland |
| 2,292 | Lochgilphead | | Scotland |
| 39,221 | Locks Heath | | England |
| 70,424 | Lod | | Israel |
| 22,901 | Lodejnoje Pole | | Russia |
| 96,125 | Lodhran | | Pakistan |
| 19,113 | Lodwar | | Kenya |
401 | 783,022 | Lodz | Lódz | Poland |
| 40,596 | Loei | | Thailand |
| 24,530 | Lofthouse / Stanley | | England |
| 168,554 | Logan | | Australia |
| 8,013 | Logatec | | Slovenia |
| 136,376 | Logrońo | | Spain |
| 36,045 | Lohja | Lojo | Finland |
| 129,121 | Loja | | Ecuador |
| 26,331 | Lökbatan | | Azerbaijan |
| 37,238 | Lokeren | | Belgium |
| 42,625 | Lokossa | | Benin |
| 28,503 | Lola | | Guinea |
| 26,919 | Lom | | Bulgaria |
| 11,322 | Lomas de Solymar | | Uruguay |
559 | 603,699 | Lomas de Zamora | | Argentina |
381 | 824,738 | Lome | Lomé | Togo |
| 31,734 | Lommel | | Belgium |
| 37,318 | Lomossov | | Russia |
| 67,248 | Lomza | | Poland |
| 58,814 | Lonavale | | India |
19 | 7,287,555 | London | | England |
786 | 452,755 | London | | Canada |
759 | 464,723 | Londrina | | Brazil |
739 | 481,383 | Long Beach | | United States of America |
| 47,299 | Long Eaton | | England |
| 153,563 | Long Xuyen | | Vietnam |
| 34,539 | Longbenton / Killingworth | | England |
| 127,519 | Loni | | India |
| 23,103 | Loon op Zand | | Netherlands |
| 62,812 | Lop Buri | | Thailand |
| 81,234 | Lorca | | Spain |
| 6,421 | Lorengau | | Papua New Guinea |
| 40,655 | Lorica | | Colombia |
| 62,578 | Lorient | | France |
| 47,477 | Lörrach | | Germany |
| 55,763 | Los Andes | | Chile |
41 | 3,866,382 | Los Angeles | | United States of America |
| 133,098 | Los Ángeles | | Chile |
| 76,822 | Los Bańos | | Philippines |
| 65,104 | Los Dos Caminos | Nabha | Venezuela |
| 34,184 | Los Palacios y Villafranca | | Spain |
| 19,111 | Los Palos | | East Timor |
| 58,903 | Los Patios | | Colombia |
| 307,853 | Los Polvorines | Malvinas Argentinas | Argentina |
| 44,638 | Los Rastrojos | | Venezuela |
| 34,612 | Los Realejos | | Spain |
| 263,828 | Los Reyes la Paz | | Mexico |
| 187,856 | Los Teques | | Venezuela |
| 22,381 | Losino-Petrovskij | | Russia |
| 22,579 | Losser | | Netherlands |
| 49,226 | Lota | | Chile |
| 70,978 | Lotung | | Taiwan |
| 110,380 | Louangphrabang | | Laos |
| 77,784 | Louga | | Senegal |
| 57,413 | Loughborough | | England |
| 41,655 | Loughton | | England |
465 | 712,496 | Louisville | | United States of America |
| 24,777 | Loulé | | Portugal |
| 31,319 | Loum | | Cameroon |
| 26,301 | Loures | | Portugal |
| 43,200 | Lovec | | Bulgaria |
| 104,296 | Lowell | | United States of America |
| 100,953 | Lower Hutt | | New Zealand |
| 70,117 | Lowestoft | | England |
| 31,400 | Lowicz | | Poland |
| 20,149 | Loznica | | Serbia |
| 62,072 | Lozova | | Ukraine |
| 7,343 | Luba | | Equatorial Guinea |
| 22,999 | Luban | | Poland |
| 24,051 | Lubartów | | Poland |
| 209,194 | Lubbock | | United States of America |
| 213,753 | Lübeck | | Germany |
| 156,621 | L'ubercy | | Russia |
| 79,796 | Lubin | | Poland |
| 363,607 | Lublin | | Poland |
| 24,818 | Lubliniec | | Poland |
| 51,146 | Lubny | | Ukraine |
| 25,498 | Lubon | | Poland |
| 66,144 | Lubuklinggau | | Indonesia |
| 50,585 | Lucan | | Ireland |
| 80,456 | Lucca | | Italy |
| 6,588 | Lucea | | Jamaica |
| 22,455 | Lucegorsk | | Russia |
| 221,420 | Lucena | | Philippines |
| 38,612 | Lucena | | Spain |
| 28,169 | Lucenec | | Slovakia |
| 190,774 | Luchou | | Taiwan |
| 32,981 | Luchovicy | | Russia |
| 6,094 | Lucija | | Slovenia |
87 | 2,485,674 | Lucknow | | India |
| 63,699 | Lucknow Cantonment | | India |
| 81,492 | Lüdenscheid | | Germany |
| 15,771 | Lüderitz | | Nambia |
161 | 1,559,875 | Ludhiana | | India |
| 42,119 | L'udinovo | | Russia |
| 25,503 | Ludvika | | Sweden |
| 89,154 | Ludwigsburg | | Germany |
| 163,166 | Ludwigshafen am Rhein | | Germany |
| 11,006 | Ludza | | Latvia |
| 40,796 | Luga | | Russia |
| 43,550 | Lugano | | Switzerland |
| 12,846 | Luganville | Santo | Vanuatu |
| 34,672 | Lugazi | | Uganda |
| 89,993 | Lugo | | Spain |
| 44,322 | Lugoj | | Romania |
763 | 464,238 | Luhans'k | Voroilovgrad | Ukraine |
| 81,671 | Luján | | Argentina |
| 81,310 | Luján de Cuyo | | Argentina |
| 85,237 | Lukang | | Taiwan |
| 16,886 | Lukaya | | Uganda |
| 31,552 | Luków | | Poland |
| 72,741 | Luleĺ | | Sweden |
| 93,158 | Lüleburgaz | | Turkey |
| 23,558 | Lulekani | | South Africa |
| 85,784 | Lumajang | | Indonesia |
| 26,616 | Lumding | | India |
| 19,205 | Lumphat | | Cambodia |
| 102,670 | Lund | | Sweden |
| 70,168 | Lüneburg | | Germany |
| 93,379 | Lünen | | Germany |
| 115,353 | Lungt'an | | Taiwan |
| 25,024 | Luninec | | Belarus |
266 | 1,130,497 | Luoyang | | China |
| 5,336 | Luqa | | Malta |
| 212,359 | Luque | | Paraguay |
| 9,111 | Luquillo | | Puerto Rico |
| 23,232 | Lurgan | | Northern Ireland |
| 47,438 | Lushnjë | | Albania |
| 20,157 | Lustenau | | Austria |
| 189,950 | Luton | | England |
| 222,437 | Luts'k | | Ukraine |
| 28,108 | Luwero | | Uganda |
| 76,258 | Luxembourg | Luxemburg | Luxembourg |
| 56,265 | Luzern | | Switzerland |
| 148,000 | Luziânia | | Brazil |
430 | 745,632 | L'viv | | Ukraine |
| 51,725 | Lyngby-Taarbćk | | Denmark |
781 | 454,478 | Lyon | | France |
| 23,888 | Lyskovo | | Russia |
| 10,970 | Lyss | | Switzerland |
| 70,894 | Lys'va | | Russia |
| 114,910 | Lysychans'k | | Ukraine |
| 41,647 | Lytham St. Anne's | | England |
| 51,264 | Lytkarino | | Russia |
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