| Ljusnarsberg | Ljusnarsberg Municipality |
| Ljutomer | Ljutomer |
| Llandovery | Llandovery epoch |
| Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch | Llanfairpwllgwyngyll |
| Llançà | Llançà |
| Lleyton Hewitt | Lleyton Hewitt |
| Lliga de Primera Divisió | Campionat de Lliga |
| Lliga Mediterrània | Mediterranean League |
| Llombai | Llombai |
| Llorenç Serra Ferrer | Llorenç Serra Ferrer |
| Lloret de Mar | Lloret de Mar |
| Lloyd Erskine Standiford | Lloyd Erskine Sandiford |
| Llucmajor | Llucmajor |
| Llutxent | Llutxent |
| Lluís Companys | Lluís Companys i Jover |
| Lluís Domènech i Montaner | Lluís Domènech i Montaner |
| Lluís Sastre | Luis Sastre Reus |
| Llywelyn Ein Llyw Olaf | Llywelyn the Last |
| Llíria | Llíria |
| Llívia | Llívia |
| LNG | Liquefied natural gas |
| Loasaceae | Loasaceae |
| Loayza | Loayza Province |
| lob | lobe |
| Lobbach | Lobbach |
| lobben | dink |
| lobbes | kind soul |
| lobby | lounge |
| Lobeira | Lobeira |
| Lobeliaceae | Lobeliaceae |
| Lobería | Lobería Partido |
| Lobi Stars | Lobi Stars |
| Lobios | Lobios |
| Lobito | Lobito |
| Lobkowicz | Lobkowicz |
| Lobos | Lobos Partido |
| lobotomie | lobotomy |
| Lobsang Trinley Choekyi Gyaltsen | Choekyi Gyaltsen |
| Loburg | Loburg |
| Local Area Network | Local area network |
| Local Government Area | Local Government Areas of Australia |
| Local Government Areas in Victoria | Local Government Areas of Victoria |
| Locale ruileconomie | Local Exchange Trading Systems |
| Locarno | Locarno |
| locatie | site |
| Loch Linnhe | Loch Linnhe |
| Loch Lomond | Loch Lomond |
| Loch na Madadh | Lochmaddy |
| Loch Ness | Loch Ness |
| Loch Rannoch | Loch Rannoch |
| Loch Tummel | Loch Tummel |
| Lochau | Lochau |
| Loches | Loches |
| Lochgilphead | Lochgilphead |
| Lochkovien | Lochkovian |
| Locke | Locke |
| Locked-in-syndroom | Locked-In syndrome |
| Lockenhaus | Lockenhaus |
| Lockerbie | Lockerbie |
| Lockhart Shire Council | Lockhart Shire Council |
| Lockheed | Lockheed |
| Lockheed Martin | Lockheed Martin |
| Lockpicken | LOCKPICK |
| loco- | acting |
| Locomondo | Todomondo |
| locomotief | motorcar |
