Susan Lilian Primrose Cunliffe-Lister, Countess of Swinton, Baroness Masham of Ilton, DL (née Sinclair; 14 April 1935 – 12 March 2023) was a British crossbench member of the House of Lords, disability campaigner and Paralympic athlete.

Her rehabilitation took place at Stoke Mandeville Hospital, where she met Sir Ludwig Guttmann, the founder of the Paralympic movement.

[1][2] She was the subject of This Is Your Life in February 1976 when she was surprised by Eamonn Andrews in the foyer of the De Vere hotel in Kensington, London.

[citation needed] Cunliffe-Lister was an active member of the House of Lords, where she continued to be known as the Baroness Masham of Ilton, a title she held in her own right.

[2] She took a particular interest in disability rights, accessible public transport and accommodation, the added cost of living, rehabilitation, health including HIV/AIDs and Long Covid, and penal reform.

[9] She opened the factory for Nordis Signs, part of the Kier Group, in Northampton, which employs a majority-disabled workforce.