Critical mass (disambiguation) explained

Critical mass is the amount of fissile material needed to sustain nuclear fission.

Critical mass may also refer to:

Science and technology

Critical mass (sociodynamics), a stage in social-system innovation
Critical mass (software engineering), a stage in the product life cycle of software

Critical Mass (cycling), a form of direct action or celebratory gathering involving large groups of bicycle riders
Critical Mass (pressure group), a UK political pressure group
Critical Mass Energy Project, an anti-nuclear umbrella group founded by Ralph Nader
- Critical Mass Journal, published in 1977 by the Critical Mass Energy Project
Critical Mass, a co-working center sponsored by the New England Venture Capital Association
Critical Mass, a robotics team of the Dwight-Englewood School in Englewood, New Jersey

Critical Mass (book), a 2004 book by Philip Ball
Critical Mass (2013 book), a 2013 novel by Sara Paretsky
"Critical Mass" (Pohl and Kornbluth short story), a 1962 story by Frederik Pohl and Cyril M. Kornbluth
"Critical Mass" (Arthur C. Clarke short story), a 1949 short story by Arthur C. Clarke
, a 1998 book by Thomas Wellock
Critical Mass, a 1990 seven-issue comic book anthology printed under Epic Comics's Shadowline Saga imprint
Critical Mass a 2023 follow-up novel to Delta-v by Daniel Suarez

Critical Mass, a 1971 experimental short film from Hollis Frampton's Hapax Legomena cycle
Critical Mass (anime), a subdivision of the video publisher and distributor Right Stuf Inc.
Critical Mass (film), a 2000 film starring Treat Williams and Lori Loughlin
"Critical Mass" (Stargate Atlantis), an episode of Stargate Atlantis

, a shooter game developed by Frontline Studios
Critical Mass (1985 video game) or Power!, a computer game by Durell Software
Critical Mass (1982 video game), an adventure game by Sirius Software
Critical Mass, a set of collectible miniature game figures by HeroClix