EDX may refer to:

Science and technology

• Electrodiagnostic medicine, a method of medical diagnosis

• Energy-dispersive X-ray spectroscopy, an analytical technique for elemental analysis or chemical characterization

• Event Driven Executive, a software application development system for the IBM Series/1 minicomputer

• EDX register, a data register on the x86 (IA-32) microprocessor architecture

Other uses

• edX, a company that provides massive open online courses

• EDX (DJ) (Maurizio Colella, born 1976), Swiss DJ and producer

• EDX London, a defunct derivatives exchange

• EDX Markets, an institutional cryptocurrency exchange