DCE
DCE may refer to:

Science
Dichloroethanes, organic solvents
Dichloroethenes, also called dichloroethylene, organic solvents
Dynamic contrast enhanced, a type of perfusion MRI

Computing
Data circuit-terminating equipment, also called data communication(s) equipment or data carrier equipment
Data Center Ethernet
Distributed Computing Environment, a specification from The Open Group
Dead-code elimination, a kind of compiler optimization
Digital Consumer Enablement, a non-neutral term for Digital rights management

Organisations
Delhi College of Engineering, University of Delhi, India
Dalian Commodity Exchange
Drum Corps Europe

Other uses
Daly Cherry-Evans
Digital currency exchanger