Fex or FEX may refer to:
Science and technology Fabric extenders, in Cisco Nexus switches Fexofenadine, an antihistamine pharmaceutical drug FEX-Emu, an emulator for running x86 applications on ARM64 Linux
Other uses Fex (band), German new wave and post-punk band (FEX), Berlin's airport express train Foreign extemporaneous speaking, a speech delivery style Val Fex, a valley in Switzerland See also