LC4

LC4 may refer to:


 * Chaise Longue LC4, a chaise longue designed by the Swiss architect Le Corbusier and French architect Charlotte Perriand
 * Buckley LC-4 Witchcraft, all-metal monoplane aircraft
 * Buick LC4 V6 car engine
 * KTM LC4, 1-cylinder 4-stroke motorcycle engine
 * LC4 (classification), para-cycling classification
 * Cytochrome c oxidase (launch complex 4), a component of the electron transport system
 * Cape Canaveral Air Force Station Launch Complex 4, one of the first series of launch complexes to be built at Cape Canaveral Air Force Station, used in the 1950s.
 * Vandenberg Air Force Base Space Launch Complex 4, a launch site at Vandenberg Air Force Base, currently active.