8 Out of 10 Cats Does Countdown is a British comedy panel show on Channel 4. The show follows the game of Countdown, but presented in a comedic panel show format seen on 8 Out of 10 Cats, with the show being a crossover of the two.

The show is hosted by Jimmy Carr, with Rachel Riley and Susie Dent assuming their Countdown roles. During most of the run, the two teams had regular captains Jon Richardson and Sean Lock; after Lock's death in 2021 his team has been led by a rotating series of guest captains while Richardson continues to be a regular captain (except when scheduling conflicts prevent him from appearing).