EDT may refer to:
- Ethylenediaminetetraacetic acid, or EDTA, a chemical widely used within medicine, science and industry.
- Eastern Daylight Time (UTC−4), a time zone observed in North America
- AEDT or Australian Eastern Daylight Time (UTC+11)
- EDT (text editor)
- EDT Hub Electronic Document Transmission software used by many Healthcare Trusts in the United Kingdom.
- Eau de toilette or EdT
- Electrodynamic tether
- Chicago Engineering Design Team, a robotics team
- Event dispatching thread, a background thread used in Java programming language