CLT, Clt, or clt may refer to:
Clathrin heavy chain 1 is a protein that in humans is encoded by the CLTC gene.
Thermal expansion is the tendency of matter to change in shape, area, and volume in response to a change in temperature.
Charlotte Douglas International Airport (IATA: CLT, ICAO: KCLT, FAA LID: CLT) is a joint civil-military public international airport located in Charlotte, North Carolina, United States.
The Criminal Law (Temporary Provisions) Act (often known by the abbreviation "CLTPA") is a Singapore statute that, among other things, allows the executive branch of the Government of Singapore to order that suspected criminals be detained without trial.
Central Luzon Television (CLTV 36 Metro Central Luzon or sometimes Metro Central Luzon TV 36) is a regional infotainment television network, based in the Central Luzon region in the Philippines.
The Professional Landcare Network (PLANET) was a professional body for lawn care professionals, landscape management professionals (exterior maintenance contractors), design/build/installation professionals, and interior plantscapers.
CLTV or Chicagoland Television is a Chicago-area local news channel.