Liaison

Liaison or Liaisons may refer to:

General usage

 * Affair, an unfaithful sexual relationship
 * Collaboration
 * Co-operation

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, 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), of the UK Parliament's upper house
 * Liaison Committee on Medical Education, an accreditation body for Northern American schools of medicine

Military

 * Liaison aircraft, a small aircraft used by military forces
 * Liaison pilot, a World War II pilot who flew liaison aircraft
 * Liaison Pilot Badge, 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, US special forces personnel attached to embassies
 * Military liaison missions, Cold War military intelligence missions in Germany

Science and linguistics

 * Liaison (French), a phonological phenomenon in the French language
 * Liaison psychiatry, a medical field treating mental conditions comorbid with physiological ones

Waterways

 * Liaison Dunkerque-Escaut, series of canals in France