Flex

Flex or FLEX may refer to:

Science and technology

Bending, also known as flexure, as used in mechanics
Power cord, or flex, a flexible electrical cable
- Flex, a flexible cable, as used on electrical appliances
Flex circuit, a flexible printed circuit used in electronic assemblies
Femtosecond Lenticule EXtraction, a form of refractive eye surgery
Flex-fuel, a flexible-fuel vehicle
FLEX mission, a potential satellite launch mission by the European Space Agency
Frequency Level Expander, a Pioneer Corporation tape enhancement feature
Flex temp, a reduced takeoff thrust setting which trades excess performance for reduced engine wear
Inflection point, of a curve in geometry
Flexion, in anatomy, a position made possible by the joint angle decreasing

Apache Flex, formerly Adobe Flex, technologies for developing rich internet applications
Flex (language), developed by Alan Kay
Flex lexical analyser, a free software alternative to lex
Flex machine, a computer developed by RSRE in the 1980s
FLEX (operating system), a single-tasking operating system for the Motorola 6800
FlexOS, a modular real-time multi-user multi-tasking operating system developed by Digital Research
FLEX (protocol), a communication protocol for pagers
FLEX (SIL FieldWorks Language Explorer), an open source application for linguists developed by SIL International
Flex, a family of automatic test equipment produced by Teradyne

Ford Flex, a full sized people mover vehicle
Fleet Landing Exercises, a series of landing exercises conducted by the Fleet Marine Force, a combined-United States Navy/Marine landing force
Future Leaders Exchange, an American student exchange program for high school students from the former Soviet Union
Flex (comics), a fictional superhero
Flex (magazine), an American bodybuilding magazine
Flex (film), a commercial/short film by English director Chris Cunningham