Her Royal Highness The Duchess of Albany (née Her Serene Highness Princess Helene Friederike Auguste of Waldeck and Pyrmont) (17 February 1861 - 1 September 1922) was the daughter of George Victor of Waldeck-Pyrmont (1831-1893) and his wife Helene Wilhelmine of Nassau-Weilburg (1831-1888)

She was born in Arolsen, in Waldeck, in Germany.

On 27 April 1882 in St. George’s Chapel , Windsor Castle, she married HRH Prince Leopold George Duncan Albert of Great Britain and Ireland, Duke of Albany, Earl of Clarence and Baron Arklow, the youngest son of Queen Victoria of the United Kingdom.

They had two children, HRH Princess Alice of Albany (1883-1981), and HRH Prince Charles Edward, 2nd Duke of Albany and reigning Duke of Saxe-Coburg and Gotha (1884-1954).

Princess Helena of Waldeck-Pyrmont died in Hinterris in the Tyrol, in Austria.