React

REACT or React may refer to:

Computing

React (software), a JavaScript library for building user interfaces, from Meta (formerly Facebook)
- React Native, a mobile application framework created by Meta (formerly Facebook)
ReactOS, an open-source operating system compatible with Microsoft Windows

React (book), originally Reacciona, a 2011 Spanish-language book
React (media franchise), a metaseries of web videos created by the Fine Brothers

React (band), a 1990s American boys band made of Tim Cruz and Daniel Matrium
React Music Limited, a 1990s London based dance record label
React (The Fixx album), a 1987 live album by the band The Fixx
React (Erick Sermon album), a 2002 album by rapper Erick Sermon
- "React" (Erick Sermon song), a song from the album
React (Robert Rich and Ian Boddy album), a 2008 album by electronic musicians Robert Rich and Ian Boddy
"React" (Onyx song), a song by Onyx on their 1998 album Shut 'Em Down
"React" (The Pussycat Dolls song), a 2020 song by the Pussycat Dolls
"React" (Switch Disco and Ella Henderson song), a 2023 song by Switch Disco and Ella Henderson

Radio Emergency Associated Communication Teams, a volunteer radio emergency service across the US and Canada
Rapid Enforcement Allied Computer Team, a task force of the High Technology Theft Apprehension and Prosecution Program, California, US

REACT (telescope), a telescope at Fenton Hill Observatory, New Mexico, US
Rapid Execution and Combat Targeting System, the command and control system of the US for nuclear intercontinental ballistic missiles
Remote Electronically Activated Control Technology belt (REACT belt), a restraint device