Leading this year's batch of famous faces are boxer David Haye, Coronation Street actress Helen Flanagan and Conservative MP Nadine Dorries.
Doctor Who star Colin Baker, EastEnders actress Charlie Brooks and Made In Chelsea's Hugo Taylor will be among the celebs battling critters in the Australian jungle.
Completing the lineup are TV entertainer Brian Conley, darts icon Eric Bristow, Pussycat Doll popstar Ashley Roberts and Birds of a Feather actress Linda Robson.
The celebrities will be challenged to live together in the jungle, taking on the dreaded bushtucker trials to win food for camp, and battling it out for the title of King or Queen of the Jungle.
Last year's series was won by McFly star Dougie Poynter.
The show is raising money for the charity Malaria No More UK with 15p from every phone vote being donated to help save lives in Africa.
I'm a Celebrity, which will be hosted as usual by Ant & Dec, launches on Sunday, November 11 at 9pm on ITV1.
Laura Whitmore's ITV2 spinoff show Get Me Out Of Here Now will air every night after the main show.
Photo gallery - I'm a Celeb 2012 lineup: