How Many Series Of The Big Bang Theory Are There [better] May 2026

The Big Bang Theory (often abbreviated TBBT) is one of the most successful sitcoms of the 21st century. Created by Chuck Lorre and Bill Prady, it premiered on CBS in 2007 and ran for 12 seasons (known as "series" in UK/Commonwealth English) before concluding in 2019.

If someone tells you there are 13 series, they are either confusing a spin-off, counting the failed pilot, or referring to a regional broadcast split. The definitive, creator-approved answer is: how many series of the big bang theory are there

If you’re asking about (the term used outside North America for a full season’s worth of episodes), the direct answer is: The Big Bang Theory (often abbreviated TBBT) is