Flex

Flex or FLEX may refer to:

Science and technology

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, a family of automatic test equipment produced by Teradyne

Power cord, or flex, a flexible electrical cable
- Flex, a flexible Electrical 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

Flex (singer), Félix Danilo Gómez (born 1974), Panamanian singer
Flex Alexander, Mark Alexander Knox (b. 1970), an American actor and comedian
Flex (album), Lene Lovich's 1979 second album
Flex (EP) a 2003 EP by Pitch Black
Funkmaster Flex, Aston George Taylor Jr (b. 1968), an American hip hop DJ
Flex , a 1993-94 hit song by Mad Cobra
"Flex" (song) a 2007 hit song by Dizzee Rascal
Flex (Ooh, Ooh, Ooh), a 2015 song by Rich Homie Quan
Flex refers to a break in the recitation tone before the mediation in Gregorian chant
Flex FM, a London pirate radio station

Flex (company) (NASDAQ symbol: FLEX), a contract electronics maker based in Singapore
Flex-Elektrowerkzeuge, a German producer of power tools
Flex Your Rights, a civil-liberties non-profit based in Washington DC, US
Flex Linhas Aéreas, a Brazilian regional airline
Flex (club), a nightclub in Vienna, Austria

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