React

REACT or React may refer to:

Science and technology

Research and Education Automatically Controlled Telescope, a telescope at Fenton Hill Observatory, New Mexico, US

React (web framework), a JavaScript library for building user interfaces, from Facebook
- React Native, a mobile application framework created by 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 to That, a Nickelodeon TV series based on the first two React series

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", a song by The Pussycat Dolls, performed on the UK TV show The X Factor: Celebrity

REACT (nonprofit organization), an international association fighting the trade in counterfeit goods
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

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