Sick Note is a British black comedy television series starring Rupert Grint and Nick Frost. It was created and written by Nat Saunders and James Serafinowicz and directed by Matt Lipsey. It first aired on 7 November 2017 on Sky One. In April 2017, it was reported that a second series had been commissioned before the first had aired. It became available for streaming on Netflix worldwide from November 2018 to 2023.

In April 2021, Saunders stated the series was "neither recommissioned or cancelled, just in TV show limbo" when asked on Twitter about its status, adding that a return seemed unlikely. Serafinowicz had previously shared similar thoughts and revealed they "wrote the first 2 episodes of season 3 but nothing ever happened."