series 11 of big bang theory started on september 25, 2017.
when does series 11 of big bang theory start?
september 25 , 2017
the big bang theory (season 11)





















































the eleventh season of the american television sitcom "the big bang theory" premiered on cbs on monday, september 25, 2017. it returned to its regular thursday time slot on november 2, 2017, after "thursday night football on cbs" ended. the season concluded on may 10, 2018.





















































in march 2017, cbs renewed the series for two additional seasons, bringing its total to twelve, and running through the 2018–19 television season.





















































section::::production.
the big bang theory (season 11)
in november 2016, it was reported that cbs was in negotiations to create a spin-off of "the big bang theory" centered on sheldon cooper as a young boy. the prequel series, described as "a "malcolm in the middle"-esque single-camera family comedy" would be executive produced by "the big bang theory" co-creator chuck lorre and producer steven molaro, with "the big bang theory" co-creator bill prady expected to be involved in some capacity, and intended to air in the 2017–18 season alongside "the big bang theory". the initial idea for the series came from jim parsons (who portrays the older sheldon on "the big bang theory"), who passed it along to "the big bang theory" producers. on march 13, 2017, cbs ordered the spin-off "young sheldon" series, which was created by lorre and molaro. jon favreau directed and executive produced the pilot. parsons, lorre, molaro and todd spiewak also serve as executive producers on the series, for chuck lorre productions, inc. in association with warner bros. television. on september 27, 2017, cbs picked up the series for a full season of 22 episodes. on january 6, 2018, the show was renewed for a second season. the second season premiered on september 24, 2018. on february 22, 2019, cbs renewed the series for both the third and fourth seasons. the third season set to premiere on september 26, 2019.
young sheldon