LCT

LCT may refer to:

Biology

 * Lysosomal cystine transporter family
 * Long-chain triglyceride
 * LCT gene, a gene that encodes the enzyme lactase

Chemistry

 * Lower consolute temperature, the critical temperature below which the components of a mixture are miscible for all compositions

Mathematics and computers

 * Limit comparison test, for series convergence
 * Linear canonical transformation, an integral transform
 * Link/cut tree, a data structure for maintaining dynamic trees

Military

 * Landing craft tank

Transportation

 * Lake Champlain Transportation Company, US
 * Lane Cove Tunnel, a toll road in Sydney, Australia
 * Lorain County Transit, Ohio, US
 * Luxury Car Tax, Australia
 * the ICAO airline code for TAR Aerolineas

Other uses

 * Labour Congress of Thailand
 * A retired US Navy hull classification symbol: Landing craft tank (LCT)
 * Language and Communication Technologies
 * LCT resort, Busan, South Korea
 * Ligue Communiste des Travailleurs, former Senegal political party
 * Local Civil time
 * Low-carbon technology (disambiguation)