EZ can mean:

• Czech Republic: FIPS PUB 10-4 territory code
• The IATA code for Evergreen International Airlines
• The IATA code for Sun Air of Scandinavia
• "easy", based on the American pronunciation of the letters
• Extraction Zone, in military parlance
• EZ Aquarii (star system)
• EZ Pass
• EZ publish
• EZ Rock
• EZ Rollers
• EZ systems
• EZ Tag
• EZ Word
• Suffix of Spanish surnames, meaning "the son of".