LCT may refer to:
Science 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
Physics Laser communication terminal, see Long-range optical wireless communication
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)