EZ or Ez may refer to:
- Eurozone, the euro area
- EZ Aquarii, a triple star system
- DJ EZ, a DJ from Tottenham, North London, UK
- EZ Rollers, a British drum and bass group
- E-ZPass, an electronic toll collection system
- EZ TAG, an electronic toll collection system
- eZ publish, an open source enterprise content management system
- EZ Word, a word processor that is part of the Andrew User Interface System
- Czech Republic's FIPS PUB 10-4 territory code
- Evergreen International Airlines' IATA code
- Sun Air of Scandinavia's IATA code
- EZ or Elizabeth Zimmermann, British-born knitter
- E-Z notation, in chemistry