QEC

QEC may refer to:


 * Quantum error correction
 * Queen Elizabeth-class aircraft carrier, two aircraft carriers of the United Kingdom's Royal Navy
 * Electoral Commission of Queensland
 * Queen Elizabeth College
 * Queen Elizabeth College, London, UK
 * Queen Elizabeth College, Palmerston North, New Zealand
 * Queen Elizabeth College, Mauritius
 * Queen Elizabeth Centre, Ballarat
 * Qulliq Energy Corporation