• LDN, a London based professional wrestling promotion
  Professional wrestling promotion
  A professional wrestling promotion is a company or business that regularly performs shows involving professional wrestling. Promotion also describes a role which entails management, advertising and logistics of running a wrestling event...
  
  .
• London Daily News
  London Daily News
  The London Daily News was a short-lived London newspaper owned by Robert Maxwell.-1987:The London Daily News was published from 24 February to 24 July 1987. It was intended to be a "24-hour" paper challenging the local dominance of the Evening Standard."For the city that never sleeps, the paper...
  
  , the short-lived London newspaper owned by British newspaper tycoon Robert Maxwell
• BBC London
  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 the weekly Politics Show on television, the BBC London 94.9 radio station and local coverage of the...
  
  , formerly known as BBC LDN
• "LDN" (song)
  LDN (song)
  "LDN" is a single by Lily Allen which was released in the UK on 25 September 2006. It was co-written by Future Cut, and features a Colombian porro from the country's Caribbean coast...
  
  , a 2006 single by Lily Allen

Other uses

• Low dose naltrexone
  Low dose naltrexone
  Low Dose Naltrexone describes the "off-label" use of the medication naltrexone, at low doses and for other diseases such as multiple sclerosis. Naltrexone is typically prescribed for opioid dependence or alcohol dependence as it is a strong opioid antogonist...
  
  , an "off-label" use of the medication naltrexone
  Naltrexone
  Naltrexone is an opioid receptor antagonist used primarily in the management of alcohol dependence and opioid dependence. It is marketed in generic form as its hydrochloride salt, naltrexone hydrochloride, and marketed under the trade names Revia and Depade...
  
   that has anecdotally been promoted with little scientific evidence of efficacy for multiple diseases
• Licensed Dietician/Nutritionist
  Nutritionist
  A nutritionist is a person who advises on matters of food and nutrition impacts on health. Different professional terms are used in different countries, employment settings and contexts — some examples include: nutrition scientist, public health nutritionist, dietitian-nutritionist, clinical...
  
  , a person licensed by a governing authority (such as one of the United States) who has met specific education and training curriculum requirements in order to distribute nutrition information for the prevention and/or treatment of specific disease states, and for the promotion of wellness
• Day-Night Average Sound Level
  Day-Night Average Sound Level
  The Day-Night Average Sound Level is the average noise level over a 24 hour period. The noise between the hours of 10pm and 7am is artificially increased by 10 dB...
  
   (abbreviated Ldn or DNL), a measure of average noise level over a day
• LSB Developer Network, Linux Standard Base
  Linux Standard Base
  The Linux Standard Base is a joint project by several Linux distributions under the organizational structure of the Linux Foundation to standardize the software system structure, including the filesystem hierarchy, used with Linux operating system...
  
   Developer Network, meant to serve as the central, community-based source of information for software developers writing portable Linux applications, much in the vein of MSDN
• Long Distance Network, a term from telecommunication
• The 639-3 code for the Láadan
  Láadan
  Láadan is a 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 shape a culture; a subsidiary hypothesis was that Western natural languages may be better...
  
   constructed language
• Lynds Catalog of Dark Nebulae by Beverly T. Lynd, 1962