EDX is a three letter acronym that can mean
- Energy-dispersive X-ray spectroscopy, an analytical method in physics and chemistry
- EDX register, a data register on the IA-32 microprocessor architecture
- A Swiss House DJ/Producer
- EDX Wireless LLC; a software planning tool company. EDX means equivalent distance in AM radio engineering.
- edX is an open source software learning platform on which educational material may be offered on the internet. See https://www.edx.org/ for a joint project, also called edX, led by MIT and Harvard University, to offer distance education using the platform.
- Event Driven Executive, a software application development system for the IBM Series/1 minicomputer.