Francis, Duke of Teck GCB GCVO, until 1863 known as Count Francis von Hohenstein, was a member of the German nobility, and later of the British Royal Family. He was the father of Queen Mary, the wife of King George V, and therefore a great-grandfather of the present queen.

Francis held the titles of Count of Hohenstein (Graf von Hohenstein), Prince (Fürst) and later Duke of Teck(Herzog von Teck) and was granted the style His Serene Highness in 1863. He was granted the British style of Highness in 1887.