Plan B (operating system), a distributed operating system derived from Plan 9 from Bell Labs

Plan B (song), a single from the British pop group Dexys Midnight Runners, released in 1981

Plan B (novel), an unfinished 1993 novel by Chester Himes

Plan B (discotheque), in Passau

Plan B (rapper), a UK hip-hop artist

Plan B (short story), a short story by Kelley Armstrong

Plan B (Veronica Mars episode), episode 17 of season 2

Plan B (magazine), a music and arts magazine based in London and Brighton, England

Plan B 2.0: Rescuing a Planet Under Stress and a Civilization in Trouble, a book by Lester R. Brown

Plan B (producer/musician), US hip-hop/indie-rock/electronic artist

Plan B (video game), a 1980s video game published by Bug-Byte

Plan B Skateboards

Plan B (duo), Reggaeton artists

Plan B Entertainment, a film production company founded by Brad Grey

Plan B Productions, a film production company founded by Clay Walker

Plan B free agency, a former reserve clause in the National Football League that has since been replaced by traditional free agency and a salary cap

Plan B (album), the 8th album from Huey Lewis and the News, released in 2001