Vex may refer to:
Technology
- VEX prefix, a microprocessor opcode prefix and coding scheme for the x86 instruction set architecture
- Vex, a scripting language in the software Houdini
- Venus Express, a European Space Agency space mission to the planet Venus
- Vex, a suborbital test Tronador rocket in development by Argentina
Fiction
- Voltayre's Encyclopedia Xenobiologica, a fictional guide to the 1994 Babylon 5 universe
- Vex, a character in the 2010 Canadian television series Lost Girl
- Vex, a character in the 2011 video game Darkspore
- Vex, a character in the 2011 video game The Elder Scrolls V: Skyrim
- The Vex, a race of semi-organic machines and one of the four alien enemy factions found in the 2014 video game Destiny
- Vex'ahlia "Vex" de Rolo (née Vessar), a Half-Elf Ranger / Rogue character in the 2015 American web series Critical Role where professional voice actors play the role-playing game Dungeons & Dragons
Other uses
- Vex (album), by Steel Pulse
- Vex, Switzerland, a municipality
- Ulorin Vex, English model
- Vex (brachiopod), a brachiopod genus; See List of brachiopod genera
- Virgin Express, a European airline, now merged into Brussels Airlines
See also
- VEX Robotics Competition, a robotics competition
- FIRST Vex Challenge, another robotics competition
- Z.Vex Effects, a US effects pedal company founded by Zachary Vex
- Z.Vex Fuzz Factory, a brand of fuzz box used for musical effects