ECSC

ECSC may stand for:
 * European Coal and Steel Community, a forerunner of the European Union
 * Eastern Colleges Science Conference, an undergraduate research conference in the northeastern United States
 * Eastern Caribbean Supreme Court, a Caribbean court system established under the Organisation of Eastern Caribbean States
 * East Coast Surfing Championships, one of the United States Surfing Federation's major amateur events
 * Expedia CruiseShipCenters
 * European Cyber Security Challenge, is a CTF competition at European level