ECS

ECS can refer to:

• European Coal and Steel Community, the ECS abbreviation used by The World Factbook
• The abbreviation for an Engineer's degree in computer science(Engineer in Computer Science)
• Elitegroup Computer Systems, a Taiwan-based electronics firm
• The Enhanced Chip Set for the Commodore Amiga computer
• Slang name of Ecstasey, synthethical drug
• Environmental Control System, the system which provides thermal control and pressurization for an airplane or spacecraft.