LCH may refer to:
Places County Hall, London, London, UK Lake Charles (Amtrak station), Louisiana, United States; Amtrak station code LCH Lake Charles Regional Airport, Lake Charles, Louisiana (IATA airport code)
Companies & organizations Lexington Catholic High School, Lexington, Kentucky, United States LCH (clearing house), a financial infrastructure company
Medicine Langerhans cell histiocytosis, a type of cancer Leydig cell hypoplasia, an intersex variation
Military & aviation HAL Light Combat Helicopter Balikpapan-class landing craft heavy, officially known as Landing Craft, Heavy or LCH KAI LCH, Light Civil Helicopter of Korea Aerospace Industries (KAI)
Science & technology Life-cycle hypothesis, a model of economic consumption Locally Compact Hausdorff space, a term used in mathematics HCL colour spaces, a category of colour space models also referred to as LCh LCHab, an LCh representation of the CIELAB colour space LCHuv, an LCh representation of the CIELUV colour space