Season 12

On Tuesday, March 21, 2017, it was announced that The Big Bang Theory would be renewed for two more seasons after Season 10, which means there is a Season 11 and a Season 12. It was thought that Season 12 would be the last TBBT season, due to comments by the cast members. CBS confirmed that Season 12 is the last season.

Cast

 * Johnny Galecki as Leonard Hofstadter (10/24)
 * Jim Parsons as Sheldon Cooper (10/24)
 * Kaley Cuoco as Penny Hofstadter (10/24)
 * Simon Helberg as Howard Wolowitz (10/24)
 * Kunal Nayyar as Rajesh Koothrappali (10/24)
 * Mayim Bialik as Amy Farrah Fowler (10/24)
 * Melissa Rauch as Bernadette Rostenkowski-Wolowitz (10/24)
 * Kevin Sussman as Stuart Bloom (recurring/main cast) (4/24)



Trivia

 * Amy's parents could return to appear again this season after they attended Sheldon and Amy's Wedding. It has been confirmed they will appear in an episode this season. They appeared in the premiere episode.
 * Penny's father, Wyatt, reappeared in the third episode.
 * Amy and Sheldon will start their first year as a married couple.
 * Some of the gang could be moving by year's end though that has not been confirmed.
 * Tam Nguyen had been confirmed to appear in an episode this season (episode four), and Sheldon revealed the reason he has not been throughout the first 11 seasons. He is played by Robert Wu.
 * Mary Cooper may return this season, but this has not been confirmed.
 * Sheldon and Amy's honeymoon was confirmed to be happening in the premiere episode.
 * On August 22, 2018, CBS announced that Season 12 was going to be the final season.
 * Neil deGrasse Tyson and Bill Nye both appeared in the premiere episode.
 * Last call for The Big Bang Theory! Jim Parsons pulled the plug after declining a 50 million dollar deal.
 * Bert Kibbler, V. M. Koothrappali, and Denise appeared in the second episode.
 * Sheldon and Amy honeymooned in New York and at LEGOLAND.
 * Stuart and Denise started dating in the second episode.
 * Leonard and Penny discussed having children in the third episode.
 * Bob Newhart returned in episode five as Professor Proton.
 * Jerry O'Connell returned as Sheldon's brother George Cooper Jr. in episode four.
 * President Siebert appeared in the fifth episode and seventh episodes, and will reappear in the eleventh.
 * This will be the final season, it is unknown how will they end it.
 * Penny Hofstadter and Leonard Hofstadter decided not to have kids and decide to become a cool uncle and aunt to Howard and Bernadette's children. But they maybe they'll change their minds or have a surprise by season's end.
 * Barry Kripke reappeared in the seventh episode.
 * Raj was set up in an arranged marriage to a woman named Anu. They become engaged in the third episode. It is unknown whether or not they will marry.
 * Raj and Anu had set their wedding date for Valentine's Day 2019.
 * A crossover of sorts with Young Sheldon happened in December, as the younger versions of Sheldon (Iain Armitage), Georgie (Montana Jordan), and their father George Sr. (Lance Barber) guest starred in "The VCR Illumination".
 * Christine Baranski returned as Beverly Hofstadter in the tenth episode.
 * Zack Johnson is reappearing in the twelfth episode, along with his new wife Marissa.