LCH may refer to:
- 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)
- Langerhans cell histiocytosis
- Lexington Catholic High School, Lexington, Kentucky
- Life cycle hypothesis - a model of economic consumption
- Locally compact Hausdorff space
- London Clearing House
- HAL Light Combat Helicopter
- LCH color space - a representation of a selection of colours in a three-dimensional diagram