LDN is usually contractional slang for

London London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a majo ...

, UK. LDN may also refer to:

Arts and media

London Daily News The ''London Daily News'' was a short-lived London newspaper owned by Robert Maxwell. It was published from 24 February to 23 July 1987. History The ''London Daily News'' was intended to be a "24-hour" paper challenging the local dominance of t ...

, former newspaper *

BBC London BBC London is the BBC English Region producing local radio, television, teletext and online services in London and parts of the surrounding area. Its output includes the daily '' BBC London News'' and weekly ''Sunday Politics'' on television, ...

(formerly ''BBC LDN''), broadcasting body * "LDN" (song), a 2006 single by Lily Allen

Language

Láadan Láadan (/ˈlɑ˦ɑˈdɑn/) is a gynocentric constructed language created by Suzette Haden Elgin in 1982 to test the Sapir–Whorf hypothesis, specifically to determine if development of a language aimed at expressing the views of women would s ...

, a feminist, sci-fi conlang (by ISO 639-3 code)

Science and technology

Low dose naltrexone Low-dose naltrexone describes the off-label, experimental use of the medication naltrexone at low doses for diseases such as Crohn's disease and multiple sclerosis. Naltrexone is typically prescribed for opioid dependence or alcohol dependence, ...

Day-night average sound level The day-night average sound level (Ldn or DNL) is the average noise level over a 24-hour period. The noise level measurements between the hours of 10pm and 7am are artificially increased by 10 dB before averaging. This noise is weighted to take in ...

, Ldn or DNL *

Linked Data Notifications Linked Data Notifications (LDN) is a W3C Recommendation that describes a communications protocol based on HTTP, URI, and RDF on how servers (''receivers'') can receive messages pushed to them by applications (''senders''), as well as how othe ...

, a communications protocol

Transport

Llandanwg railway station Llandanwg railway station is in the village of Llandanwg in Gwynedd, Wales. It is an unstaffed halt on the Cambrian Coast Railway with direct passenger services to Harlech, Porthmadog and Pwllheli to the north and west, and Barmouth, Machynlleth ...

, Gwynedd, Wales (by National Rail station code) {{disambig