Liaison or Liaisons may refer to:

General usage

Affair An affair is a relationship typically between two people, one or both of whom are either married or in a long-term Monogamy, monogamous or emotionally-exclusive relationship with someone else. The affair can be solely sexual, solely physical or ...

, an unfaithful sexual relationship *

Collaboration Collaboration (from Latin ''com-'' "with" + ''laborare'' "to labor", "to work") is the process of two or more people, entities or organizations working together to complete a task or achieve a goal. Collaboration is similar to cooperation. The ...

Co-operation Cooperation (written as co-operation in British English and, with a varied usage along time, coöperation) takes place when a group of organisms works or acts together for a collective benefit to the group as opposed to working in competition ...

* Liaison, an egg-based

thickening A thickening agent or thickener is a substance which can increase the viscosity of a liquid without substantially changing its other properties. Edible thickeners are commonly used to thicken sauces, soups, and puddings without altering their ...

used in cooking

Arts and entertainment

* Liaisons (''Desperate Housewives''), a 2007 episode of the American drama series * Liaisons (''Star Trek: The Next Generation''), a 1993 American sci-fi episode * "Liaisons", a song from Stephen Sondheim's 1973 musical '' A Little Night Music'' * ''

Les Liaisons dangereuses ''Les Liaisons dangereuses'' (; English: ''Dangerous Liaisons'') is a French epistolary novel by Pierre Choderlos de Laclos, first published in four volumes by Durand Neveu on March 23, 1782. It is the story of the Marquise Isabelle de Merteu ...

'', a 1782 French novel by Pierre Choderlos de Laclos * '' Liaisons: Re-Imagining Sondheim from the Piano'', a 2015 album by Anthony de Mare * ''Liaison'' (TV series), a British–French series on Apple TV+

Businesses and organisations

* Air Alliance, a defunct Canadian airline (call sign: ''Liaison'') * Liaison Agency Flanders-Europe, a Flemish government body * Liaison Committee (House of Commons of the United Kingdom), of the UK Parliament's lower house *

Liaison Committee (House of Lords) The Liaison Committee is a select committee of the House of Lords. The Committee advises the House on financial and other resources required by the body's select committees and allocates those resources among them. It is also responsible for review ...

, of the UK Parliament's upper house *

Liaison Committee on Medical Education The Liaison Committee on Medical Education (LCME) is an accrediting body for educational programs at schools of medicine in the United States and Canada.''Glossary.'' ACGME website. The LCME is sponsored by the Association of American Medical ...

, an accreditation body for Northern American schools of medicine

Military

Liaison aircraft A liaison aircraft (also called an army cooperation aircraft) is a small, usually unarmed aircraft primarily used by military forces for artillery observation or transporting commanders and messages. Operation The concept developed before Worl ...

, a small aircraft used by military forces **

Liaison pilot A liaison pilot was a World War II United States Enlisted rank, enlisted aviator, pilot, whose wings bore an "L" in the center. They flew light single engine liaison aircraft. Included were many enlisted aviation students who left basic combat train ...

, a World War II pilot who flew liaison aircraft **

Liaison Pilot Badge The Glider Pilot, Liaison Pilot, and Service Pilot badges were qualification badges of the United States Army Air Forces issued during the years of World War II to identify a rating in one of three specialized, limited-duty pilot categories whose ...

, a qualification badge issued by the United States Army Air Forces during World War II * Liaison officer, a military officer who coordinates different forces or national units usually at Staff level *

Military Liaison Element The Special Operations Forces Liaison Element (SOFLE) is small group of special forces personnel, sometimes just one or two at a time, attached to embassies in Africa, Southeast Asia, South America, or elsewhere that terrorists are thought to be o ...

, US special forces personnel attached to embassies *

Military liaison missions The military liaison missions arose from reciprocal agreements formed between the Western allied nations (the United States, the United Kingdom and France) and the Soviet Union, shortly after the end of the Second World War. The missions were ac ...

, Cold War military intelligence missions in Germany *

Special Liaison Unit A Special Liaison Unit (SLU) was a unit within the British military during the Second World War tasked with disseminating intelligence from the Ultra program in World War II to military commanders in the field. Origin The breakthroughs at Bletchle ...

that dealt with disseminating intelligence from the Ultra program in World War II to military commanders in the field

Science and linguistics

Liaison (French) In French, liaison () is the pronunciation of a linking consonant between two words in an appropriate phonetic and syntactic context. For example, the word () is pronounced , the word () is pronounced , but the combination is pronounce ...

, a phonological phenomenon in the French language *

Liaison psychiatry Liaison psychiatry, also known as consultative psychiatry or consultation-liaison psychiatry, is the branch of psychiatry that specialises in the interface between general medicine/pediatrics and psychiatry, usually taking place in a hospital or ...

, a medical field treating mental conditions comorbid with physiological ones

Waterways

Liaison Dunkerque-Escaut The Dunkirk-Scheldt Canal is a 189 km long series of historic canals, and the canalised river Scheldt that were substantially rebuilt from the mid-1950s up to ca. 1980, with some new sections, from Dunkirk to the Belgian border at Mortagne-d ...