MEC may refer to:
Businesses MEC (media agency), a media agency network based in London and New York Mediterranean Exploration Company, a restaurant in Portland, Oregon Mongolia Energy Corporation, a mining company Morgan Electro Ceramics, a ceramics manufacturing company Mountain Equipment Co-op, a defunct Canadian outdoors gear & clothing retail co-operative MEC Canada, its successor Myanmar Economic Corporation, a Burmese military-owned corporation
Education Mymensingh Engineering College, Mymensingh, Bangladesh. Manufacturing Engineering Centre, Cardiff University, United Kingdom Master of Economics (M.Ec.), a postgraduate degree Midland Empire Conference, a high school activity conference in Missouri, USA Model Engineering College, Cochin, Kerala, India
Medicine Mucoepidermoid carcinoma
Politics Member of the Executive Council, a member of the South African provincial government Ministry of Education (Brazil), the Brazilian education ministry Ministry of Education and Culture (Uruguay) Movement for Economic Change, a political party in Lesotho
Religion Methodist Episcopal Church, the progenitor of present-day Methodist denominations in the Americas Metropolitan Evangelistic Church, a Methodist denomination in the holiness movement
Sports Madureira Esporte Clube, an association football club in Rio de Janeiro, Brazil MEC (basketball), Maison d'Enfants Club, a professional basketball club in Casablanca, Morocco Motor Enthusiasts Club, motor club in the Republic of Ireland Mountain East Conference, a U.S. college athletic conference
Transport Eloy Alfaro International Airport (IATA airport code), Manta, Ecuador Maine Central Railroad (reporting mark), a former railroad in Maine, U.S. Meols Cop railway station (National Rail code), Merseyside, England
Technology Media Expansion Card, a type of PCIe computer expansion card Microbial electrolysis cell, a type of bioelectrochemical system Multi-access edge computing, a network architecture concept
Other Marginal efficiency of capital, an economics theory Measured environmental concentration of a substance in an environmental sample Mec, Poland Munitions and explosives of concern, unexploded ordnance