A catalyst is a substance which changes the rate of a chemical reaction.

Catalyst may also refer to:

Buildings Catalyst (building), a high-rise in Charlotte, North Carolina Catalyst (museum), a hands-on science centre and chemical industry museum in Widnes in Cheshire in England The Catalyst (nightclub), a music venue in Santa Cruz, California

Economics and finance Economic catalyst Stock catalyst

Events Catalyst Conference, an annual nondenominational Christian event

Media and entertainment

Games Catalyst (role-playing game supplements), a series of fantasy role-playing game supplements Catalyst, an indie role-playing game published by Cherry Picked Games in 2015 The Catalyst, a fictional character in Mass Effect 3 Catalyst, a playable character in the video game 2019 Apex Legends

Literature and publications Catalyst, a left-wing scholarly journal published by Jacobin Catalyst (magazine), published by the RMIT University Student Union Catalyst (novel), by Laurie Halse Anderson Catalyst, fourth book in Fletcher DeLancey's Chronicles of Alsea series The Catalyst (Doctor Who audio), a 2008 Doctor Who audiobook The Catalyst (American newspaper), an American weekly newspaper The Catalyst (Philippine newspaper), the official student publication of the Polytechnic University of the Philippines Catalyst, a freesheet of the Solidarity Federation Catalyst, a magazine published by the Commission for Racial Equality in the United Kingdom Catalyst, a publication of the Union of Concerned Scientists The Catalyst, a science fiction novel by Charles L. Harness Catalyst, the journal of the Catholic League for Religious and Civil Rights Catalyst: A Rogue One Novel, a direct prequel novel to the 2016 film Rogue One: A Star Wars Story

Music Catalyst (New Found Glory album), 2004 Catalyst (Prototype album), 2012 Catalyst (band), an American funk-jazz band "The Catalyst", a 2010 song by Linkin Park The Catalyst (album), a 2024 studio album by Amaranthe The Catalyst, a 2017 studio album by Neurotech

Television and film Catalyst (1990 TV program), an Australian science and technology television series Catalyst (TV program), an Australian science journal "Catalysts" (The Spectacular Spider-Man), an episode of the animated television series The Spectacular Spider-Man Catalyst, a BBC Two television ident first aired in 2000 (see BBC Two '1991–2001' idents)

Organizations Catalyst (nonprofit organization), an organization that promotes inclusive workplaces for women Catalyst (science park), Northern Ireland Catalyst (think tank), a socialist left political think tank based in London, United Kingdom Catalyst Paper, a Canadian paper mill company Catalyst Technologies, one of the first company incubators, founded by Nolan Bushnell

Technology Catalyst (software), a web application framework Alchemy Catalyst, an Internationalization and localization tool AMD Catalyst, formerly ATI Catalyst, a software suite for graphic cards Cisco Catalyst, a line of network switches General Electric Catalyst, a turboprop aircraft engine under development by GE Aviation Catalyst, a line of automatic test equipment produced by Teradyne AudioCatalyst, a software package from Xing Technology Gentoo Catalyst, a tool to create Gentoo Linux environments Mac Catalyst, a software development tool for macOS

See also Catalist, an American corporation Catalytic converter, a device in modern vehicles to reduce emissions Katalyst (disambiguation) Qatalyst Group, a corporate advisory firm