“The Big Bang Theory” ended on May 16, 2019, with a two-episode series finale that closed out its 12th season on CBS.

Quick Scoop

  • Final air date: May 16, 2019, when the two-part finale (“The Change Constant” and “The Stockholm Syndrome”) was broadcast.
  • Total run: The show aired from September 24, 2007, to May 16, 2019, completing twelve seasons.
  • Reason it ended: Season 12 was announced as the last after Jim Parsons chose not to continue, leading CBS and the producers to wrap the story that year.

In other words, if you’re catching reruns or streaming it now in 2026, everything after that May 2019 finale is just spin-offs and nostalgia, not new main-series episodes.

TL;DR: The Big Bang Theory ended on May 16, 2019, at the conclusion of its 12th season on CBS.

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