| .lol | Generic | XYZ.COM LLC | — | — |
| .london | Generic | Dot London Domains Limited | — | — |
| .lotte | Generic | Lotte Holdings Co., Ltd. | — | — |
| .lotto | Generic | Identity Digital Limited | — | — |
| .love | Generic | Waterford Limited | — | — |
| .lpl | Generic | LPL Holdings, Inc. | — | — |
| .lplfinancial | Generic | LPL Holdings, Inc. | — | — |
| .lr | Country Code | Data Technology Solutions, Inc. | 🇱🇷Liberia | — |
| .ls | Country Code | Lesotho Network Information Centre Proprietary (LSNIC) | 🇱🇸Lesotho | — |
| .lt | Country Code | Kaunas University of Technology | 🇱🇹Lithuania | — |
| .ltd | Generic | Binky Moon, LLC | — | — |
| .ltda | Generic | InterNetX Corp. | — | — |
| .lu | Country Code | RESTENA | 🇱🇺Luxembourg | — |
| .lundbeck | Generic | H. Lundbeck A/S | — | — |
| .luxe | Generic | Registry Services, LLC | — | — |
| .luxury | Generic | Luxury Partners LLC | — | — |
| .lv | Country Code | University of Latvia, Institute of Mathematics and Computer Science, Department of Network Solutions (DNS) | 🇱🇻Latvia | — |
| .ly | Country Code | General Authority of Communications and Informatics (GACI) | 🇱🇾Libya | — |
| .ma | Country Code | Agence Nationale de Réglementation des Télécommunications (ANRT) | 🇲🇦Morocco | — |
| .madrid | Generic | Comunidad de Madrid | — | — |
| .maif | Generic | Mutuelle Assurance Instituteur France (MAIF) | — | — |
| .maison | Generic | Binky Moon, LLC | — | — |
| .makeup | Generic | XYZ.COM LLC | — | — |
| .man | Generic | MAN Truck & Bus SE | — | — |
| .management | Generic | Binky Moon, LLC | — | — |
| .mango | Generic | PUNTO FA S.L. | — | — |
| .map | Generic | Charleston Road Registry Inc. | — | — |
| .market | Generic | Dog Beach, LLC | — | — |
| .marketing | Generic | Binky Moon, LLC | — | — |
| .markets | Generic | Dog Beach, LLC | — | — |
| .marriott | Generic | Marriott Worldwide Corporation | — | — |
| .marshalls | Generic | The TJX Companies, Inc. | — | — |
| .mattel | Generic | Mattel IT Services, Inc. | — | — |
| .mba | Generic | Binky Moon, LLC | — | — |
| .mc | Country Code | Direction des Plateformes et des Ressources Numériques | 🇲🇨Monaco | — |
| .mckinsey | Generic | McKinsey Holdings, Inc. | — | — |
| .md | Country Code | IP Serviciul Tehnologia Informatiei si Securitate Cibernetica | 🇲🇩Moldova | — |
| .me | Country Code | Government of Montenegro | 🇲🇪Montenegro | — |
| .med | Generic | Medistry LLC | — | — |
| .media | Generic | Binky Moon, LLC | — | — |
| .meet | Generic | Charleston Road Registry Inc. | — | — |
| .melbourne | Generic | The Crown in right of the State of Victoria, represented by its Department of State Development, Business and Innovation | — | — |
| .meme | Generic | Charleston Road Registry Inc. | — | — |
| .memorial | Generic | Dog Beach, LLC | — | — |
| .men | Generic | Exclusive Registry Limited | — | — |
| .menu | Generic | Dot Menu Registry LLC | — | — |
| .merck | Generic | Merck Registry Holdings, Inc. | — | — |
| .merckmsd | Generic | MSD Registry Holdings, Inc. | — | — |
| .mg | Country Code | NIC-MG (Network Information Center Madagascar) | 🇲🇬Madagascar | — |
| .mh | Country Code | Office of the Cabinet | 🇲🇭Marshall Islands | — |