| Philippe Hurepel de Clermont - Count of Boulogne, son of Philippe Auguste | Commander of the fortress in 1222. |
| Renaud de Dammartin - Count of Boulogne | Signed the communal charter in 1194. |
| Marie de Médicis - Queen of France | Order partial destruction in 1615. |
| Sir John Hare - English magistrate | Restore the ruins in 1848. |
| Charles Dickens - English Writer | Stay quietly at the castle. |
| Henry Guy - Captain and owner | Built the neo-Tudor mansion in 1865. |
| Helen Guy (Guy d'Hardelot) - Composer | Daughter of Henry Guy, famous under pseudonym. |
| John Robinson Whitley - English entrepreneur | Developed the seaside resort in 1897. |
| Abbé Bouly - Curé de Condette | Owner in 1934, father of radiesthesia. |
| Roman Polanski - Filmmaker | Turns *Tess* at the castle in 1979. |
| Benoît Grécourt - Director General of the Castle | Commissioner of Cultural Exhibitions since 2001. |
| Andrew Todd - Architect | Designed the Elizabethan theatre in 2014. |