Roberte Ponsonby, Countess of Bessborough, GCStJ, JP (née Poupart de Neuflize; 15 September 1892 – 22 November 1979), was a French noblewoman who married into the English aristocracy and served as Viceregal Consort of Canada in the 1930s.

She was the only daughter of Baron Jean Poupart de Neuflize and Madeleine Dolfuss-Davilliers and grew up in the family home, 7 Rue Alfred-de-Vigny, a hôtel particulier in the 8th arrondissement of Paris.

She had two older brothers, André Poupart de Neuflize (who married the American heiress Eva Barbey),[1][2][3] and Jacques Poupart de Neuflize, a banker who succeeded their father in running the family bank.

[5] On 25 June 1912, she married Vere Ponsonby, Viscount Duncannon (1880–1956), son of Edward Ponsonby, 8th Earl of Bessborough, and Blanche Vere Guest; she held the courtesy title of Viscountess Duncannon.

She was invested as a Dame Grand Cross, Most Venerable Order of the Hospital of St. John of Jerusalem (GC.St.J).