Of The Big Bang Theory Are There: How Many Series

However, a comprehensive guide requires nuance: episode counts, special classifications (e.g., "season zero"), the spin-off ( Young Sheldon ), and why the show ended after 12 series despite record-breaking ratings. Here is every series (season) of The Big Bang Theory , including episode counts, original air dates, and notable plot arcs.

As of 2026, no. Jim Parsons has repeatedly stated he won’t return as Sheldon full-time. He did reprise the role for a voice cameo in Young Sheldon finale. how many series of the big bang theory are there

No. All countries aired 12 seasons. However, some countries (e.g., Japan, Germany) split a single US season into two shorter “series” for broadcast. But on streaming and DVD, it’s always 12. Final Summary | Question | Answer | |----------|--------| | How many series of The Big Bang Theory ? | 12 | | Total episodes | 279 | | Last series aired | 2019 | | Spin-offs (canon) | Young Sheldon (7 series), Georgie & Mandy (ongoing) | | Will there be more? | No (main show ended permanently) | Jim Parsons has repeatedly stated he won’t return

If you’re asking about (the term used outside North America for a full season’s worth of episodes), the direct answer is: All countries aired 12 seasons

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.

That is Georgie & Mandy’s First Marriage (2024–present), focusing on Sheldon’s older brother. Again, not TBBT.