| 301 | Princess | Pamela Seymour, Marchioness of HertfordPrincess | Riquet de Caraman family | — | | unknown | 4 ch.Children (no sourced line of succession) | 93 |
| 302 | Princess | Nora PicciottoPrincess | Czartoryski (House of) | 🇪🇬EG | | unknown | 1 ch.Children (no sourced line of succession) | 84 |
| 303 | Prince | Michel, Prince of LignePrince | Ligne (House of) | 🇧🇪BE | 21 y 82 d | Princess Alix of Luxembourg | 2 ch.Children (no sourced line of succession) | 75 |
| 304 | Princess of Lignec | Princess Eleonora, Princess of LignePrincess of Ligne (c) | Ligne (House of) | 🇧🇷BR | | Princess Maria Elisabeth of Bavaria | 2 ch.Children (no sourced line of succession) | 73 |
| 305 | Princess of Lignec | Princess Christine of LignePrincess of Ligne (c) | Ligne (House of) | 🇧🇪BE | | Princess Alix of Luxembourg | 4 ch.Children (no sourced line of succession) | 71 |
| 306 | Princess | Archduchess Alexandra of AustriaPrincess | Habsburg-Tuscany (House of) | — | | Princess Ileana of Romania | 1 ch.Children (no sourced line of succession) | 91 |
| 307 | Prince | Dominic von HabsburgPrince | Habsburg-Tuscany (House of) | 🇺🇸US+1 | | Princess Ileana of Romania | 2 ch.Children (no sourced line of succession) | 89 |
| 308 | Princess | Macha MérilPrincess | Gagarin family | 🇫🇷FR | | unknown | 0 ch. | 86 |
| 309 | Prince | Prince Michel d'OrléansPrince | Orléans (House of) | 🇲🇦MA+1 | | Henri, Count of Paris | 4 ch.Children (no sourced line of succession) | 85 |
| 310 | Princess | Archduchess Walburga, Baroness of Bordogna and ValnigraPrincess | Habsburg-Tuscany (House of) | — | | Archduke Georg of Austria | 8 ch.Children (no sourced line of succession) | 84 |
| 311 | Princess | Princess Catherine TroubetzkayaPrincess | Trubetskoy family | — | | Vladimir Trubetskoy | 0 ch. | 84 |
| 312 | Princess | Princess Claude of OrléansPrincess | Orléans (House of) | 🇫🇷FR | | Henri, Count of Paris | 3 ch.Children (no sourced line of succession) | 82 |
| 313 | Princess | Antoinette d'Aspremont LyndenPrincess | Merode (House of) | 🇧🇪BE | | Werner de Merode | 0 ch. | ~77 |
| 314 | Princess | Princess Béatrice of Bourbon-Two SiciliesPrincess | Bourbon-Two Sicilies (House of) | 🇮🇹IT+1 | | Prince Ferdinand, Duke of Castro | 2 ch.Children (no sourced line of succession) | 76 |
| 315 | Princess | Archduchess Maria Béatrice of Austria-EstePrincess | Austria-Este (House of) | — | | Robert, Archduke of Austria-Este | 6 ch.Children (no sourced line of succession) | 71 |
| 316 | Prince | Prince Alexander TroubetzkoyPrince | Trubetskoy family | 🇩🇪DE | | Vladimir Trubetskoy | 0 ch. | 72 |
| 317 | Prince | Archduke Gerhard of Austria-EstePrince | Austria-Este (House of) | — | | Robert, Archduke of Austria-Este | 0 ch. | 69 |
| 318 | Prince | Prince Stéphane Belosselsky-BelozerskyPrince | Belosselsky-Belozersky (House of) | 🇫🇷FR | | unknown | 0 ch. | ~69 |
| 319 | Princess | Princess Anne of the Two SiciliesPrincess | Bourbon-Two Sicilies (House of) | — | | Prince Ferdinand, Duke of Castro | 2 ch.Children (no sourced line of succession) | 69 |
| 320 | Prince | Archduke Martin of Austria-EstePrince | Austria-Este (House of) | — | | Robert, Archduke of Austria-Este | 4 ch.Children (no sourced line of succession) | 66 |
| 321 | Princess of Liechtensteinc | Princess Marie of LiechtensteinPrincess of Liechtenstein (c) | Orléans (House of) | 🇫🇷FR | | Duchess Marie-Thérèse of Württemberg | 4 ch.Children (no sourced line of succession) | 67 |
| 322 | Prince | Emanuel Salm-SalmPrince | not recorded | 🇩🇪DE | | unknown | 0 ch. | 64 |
| 323 | Princess | Princess Lalla Joumala AlaouiPrincess | 'Alawi dynasty | 🇲🇦MA | | Moulay Ali Alaoui | 0 ch. | ~64 |
| 324 | Princess of Moroccoc | Princess Lalla Meryem of MoroccoPrincess of Morocco (c) | 'Alawi dynasty | 🇲🇦MA | | Hassan II | 0 ch. | 64 |
| 325 | Prince | Jean, Count of ParisPrince | Orléans (House of) | 🇫🇷FR+1 | | Duchess Marie-Thérèse of Württemberg | 5 ch.Children (no sourced line of succession) | 61 |
| 326 | Princess of Moroccoc | Princess Lalla Asma of MoroccoPrincess of Morocco (c) | 'Alawi dynasty | 🇲🇦MA | | Hassan II | 0 ch. | 61 |
| 327 | Prince | Sigismund of Habsburg-LorrainePrince | Habsburg-Tuscany (House of) | 🇨🇭CH | | Archduke Leopold Franz of Austria | 3 ch.Children (no sourced line of succession) | 60 |
| 328 | Prince of Vidinc | Konstantin-Assen, Prince of VidinPrince of Vidin (c) | Saxe-Coburg and Gotha-Koháry (Bulgaria) (House of) | 🇪🇸ES+1 | | Simeon II | 2 ch.Children (no sourced line of succession) | 58 |
| 329 | Princess | María of Bourbon-Two SiciliesPrincess | Bourbon-Two Sicilies (House of) | 🇪🇸ES | | Infante Carlos, Duke of Calabria | 5 ch.Children (no sourced line of succession) | 59 |
| 330 | Princess of Moroccoc | Princess Lalla Hasna of MoroccoPrincess of Morocco (c) | 'Alawi dynasty | 🇲🇦MA | | Hassan II | 0 ch. | 58 |
| 331 | Princess | Marie-Chantal, Crown Princess of GreecePrincess | Glücksburg (Greece) (House of) | 🇬🇧GB+1 | | unknown | 5 ch.Children (no sourced line of succession) | 58 |
| 332 | Prince | Prince Eudes, Duke of AngoulêmePrince | Orléans (House of) | 🇫🇷FR | | Duchess Marie-Thérèse of Württemberg | 1 ch.Children (no sourced line of succession) | 58 |
| 333 | Princess of Greece | Princess Alexandra of GreecePrincess of Greece | Glücksburg (Greece) (House of) | 🇬🇷GR | | Prince Michael of Greece and Denmark | 0 ch. | 58 |
| 334 | Prince of Greece and Denmarkc | Prince Nikolaos of Greece and DenmarkPrince of Greece and Denmark (c) | Glücksburg (Greece) (House of) | 🇬🇷GR+1 | | Constantine II of Greece | 0 ch. | 57 |
| 335 | Prince | Emmanuel de MerodePrince | Merode (House of) | 🇧🇪BE | | unknown | 2 ch.Children (no sourced line of succession) | 56 |
| 336 | Prince | Predrag JakovljevićPrince | Obrenović (House of) | 🇷🇸RS | | unknown | 0 ch. | 56 |
| 337 | Prince of Moroccoc | Prince Moulay Rachid of MoroccoPrince of Morocco (c) | 'Alawi dynasty | 🇲🇦MA | | Hassan II | 1 ch.Children (no sourced line of succession) | 56 |
| 338 | Prince | Prince Charles-Louis d'OrléansPrince | Orléans (House of) | 🇫🇷FR | | Prince Jacques d'Orléans | 5 ch.Children (no sourced line of succession) | 54 |
| 339 | Prince | Prince Foulques d'OrléansPrince | Orléans (House of) | 🇫🇷FR | | Prince Jacques d'Orléans | 0 ch. | 52 |
| 340 | Princess | Ana Bagration-GruzinskyPrincess | Bagrationi dynasty | 🇬🇪GE | | Nugzar Bagration-Gruzinsky | 3 ch.Children (no sourced line of succession) | 50 |
| 341 | Prince | Prince Robert d'OrléansPrince | Orléans (House of) | 🇬🇧GB | | Prince Thibaut d'Orléans | 0 ch. | 50 |
| 342 | Countess of Parisc | Philomena, Countess of ParisCountess of Paris (c) | Orléans (House of) | 🇫🇷FR | | unknown | 5 ch.Children (no sourced line of succession) | ~49 |
| 343 | Princess | Princess Lalla Salma of MoroccoPrincess | 'Alawi dynasty | 🇲🇦MA | | unknown | 2 ch.Children (no sourced line of succession) | 48 |
| 344 | Princess of Greece and Denmarkc | Princess Tatiana of Greece and DenmarkPrincess of Greece and Denmark (c) | Glücksburg (Greece) (House of) | 🇻🇪VE+2 | | unknown | 0 ch. | 46 |
| 345 | Prince of Moroccoc | Prince Moulay Ismail of MoroccoPrince of Morocco (c) | 'Alawi dynasty | 🇲🇦MA | | Prince Moulay Abdallah of Morocco | 0 ch. | 45 |
| 346 | Prince of Albaniac | Leka, Prince of AlbaniaPrince of Albania (c) | Zogu (House of) | 🇦🇱AL | | Leka, Crown Prince of Albania | 2 ch.Children (no sourced line of succession) | 44 |
| 347 | Prince | Prince François d'OrléansPrince | Orléans (House of) | 🇪🇸ES | | Prince Michel d'Orléans | 2 ch.Children (no sourced line of succession) | 44 |
| 348 | Princess | Princess Theodora of Greece and DenmarkPrincess | Glücksburg (Greece) (House of) | 🇬🇧GB+1 | | Constantine II of Greece | 0 ch. | 43 |
| 349 | Princess | Princess Elisabetta of BelgiumPrincess | Austria-Este (House of) | 🇮🇹IT | | unknown | 3 ch.Children (no sourced line of succession) | 39 |
| 350 | Princess | Olympia, Princess NapoléonPrincess | Arco | 🇩🇪DE | | Archduchess Maria Béatrice of Austria-Este | 1 ch.Children (no sourced line of succession) | 38 |