Lot No. 249 is a short film which is part of the British supernatural anthology series A Ghost Story for Christmas. Produced by Isibeal Ballance and written and directed by Mark Gatiss, it is based on the gothic horror story of the same name by Arthur Conan Doyle, first published in Harper's Magazine in 1892, and first aired on BBC Two on 24 December 2023.

It stars Kit Harington as Abercrombie Smith, a student athlete at Oxford University who discovers that his neighbour, Edward Bellingham (Freddie Fox) is using a revived Egyptian mummy to murder his rivals.

The majority of instalments in the series have been based on ghost stories by M. R. James, with "The Signalman" (1976), based on a story by Charles Dickens, and three original episodes being the only break with this tradition. Gatiss had expressed a desire to adapt other authors, and a season of programming related to Conan Doyle which the BBC aired over Christmas 2023 influenced the choice of "Lot No. 249".