MECO

Meco may refer to:


 * Meco (born 1939), American record producer and musician
 * Meco (municipality), a part of metropolitan Madrid, Spain

MECO may stand for:
 * Mactan Electric Company
 * Metropolitan Edison, an electric utility serving regions of Pennsylvania, later acquired by GPU, and now part of FirstEnergy; Meco Road, bordering its property near Easton, Pennsylvania, is named for the company
 * Main engine cutoff, the shut-off of the first stage in a multistage rocket
 * Magnetospheric eternally collapsing object, a theoretical alternative to a black hole
 * Middle European Cooperation in Statistical Physics, an international conference on statistical physics
 * Middle Eocene Climatic Optimum, a global warming period 40 million years ago, during the Eocene