Jeanne de Casalis (22 May 1891 – 19 August 1966) was a Basutoland-born British actress of stage, radio, TV and film.

[1] Born in Basutoland as Jeanne Casalis de Pury in 1891, not 1897 as frequently reported (see the Age Fabrication paragraph below), she was educated in France, where her businessman father was the proprietor of one of that country's largest corset retailers, Charneaux.

She appeared on stage in The Mask of Virtue with Vivien Leigh (1935), and in Agatha Christie's The Hollow (1951).

[9] Her second husband, whom she married around 1938, was RAF Wing Commander Cowan Douglas Stephenson; they lived at Hunger Hatch near Ashford, Kent.

[2] As confirmed by her death record,[11] Jeanne de Casalis forged her real birth date 22 May 1891, into 22 May 1897, gaining 6 years in the process.