Economics and commerce
* Engineering change management * Equity capital markets * Error correction model, an econometric model * European Common MarketMathematics
* Lenstra's Elliptic curve method for factoring integers * European Congress of Mathematics * Equivalent circuit model for Li-ion cellsScience and medicine
* Ectomycorrhiza * Electron cloud model * Engineered Cellular Magmatics * Erythema chronicum migrans * Extracellular matrixSport
* European Championships ManagementTechnology
* Electrochemical machining * Electronic contract manufacturing * Electronic countermeasure * Electronics contract manufacturing * Electronically commutated motor * Energy conservation measure * Engine control module * Enterprise content management * Error correction modeOther uses
* East Camberwell railway station, Melbourne * ECM Records, a record label * ECM Real Estate Investments, a defunct real estate developer based in Luxembourg * Edinburgh City Mission, a Christian organization in Scotland * Editio Critica Maior, a critical edition of the Greek New Testament * Elektrani na Severna Makedonija (), a power company in North Macedonia * Energy Corrected Milk, in farming * Episcopal Conference of Malawi * Every Child Matters, a UK Government initiative for children * Every Child Ministries, a Christian charity for African children * Exceptional case-marking, in linguistics {{disambiguation