| Prince Pierre | |
|---|---|
| Duke of Valentinois | |
.jpg) Prince Pierre de Polignac in 1923 | |
| Born | Pierre Marie Xavier Raphaël Antoine Melchior de Polignac 24 October 1895 Château de Kerscamp, Morbihan, France |
| Died | 10 November 1964 (aged 69) American Hospital, Neuilly-sur-Seine, Paris, France |
| Burial | Chapel of Peace, Monaco |
| Spouse | |
| Issue | Princess Antoinette, Baroness of Massy Rainier III, Prince of Monaco |
| House | Polignac (by birth) Grimaldi (by marriage) |
| Father | Maxence de Polignac |
| Mother | Susana de la Torre y Mier |
Prince Pierre of Monaco, Duke of Valentinois (born Pierre Marie Xavier Raphaël Antoine Melchior de Polignac; 24 October 1895 – 10 November 1964) was the father of Rainier III of Monaco. He was a promoter of art, music, and literature in Monaco and served as the head of the country's delegation to the United Nations Educational, Scientific, and Cultural Organization (UNESCO) and to the International Olympic Committee.