| Constance I van Antiochië | Constance of Antioch |
| Constance Manuel van Kastilië | Constance of Penafiel |
| Constance van Aragon | Constance of Aragon |
| Constance van Arles | Constance of Arles |
| Constance van Kastilië | Constance of Castile |
| Constance van Oostenrijk | Constance of Austria |
| Constance van Sicilië | Constance of Sicily |
| Constans I | Constans |
| Constans II Pogonatos | Constans II |
| Constans II van Rome | Constans II |
| constant | permanent |
| Constant Fornerod | Constant Fornerod |
| Constant Nieuwenhuys | Constant Nieuwenhuys |
| Constant Vanden Stockstadion | Constant Vanden Stock Stadium |
| constante | constant |
| Constante van Avogadro | Avogadro constant |
| Constante van Planck | Planck constant |
| Constante van Stefan-Boltzmann | Stefan-Boltzmann constant |
| Constantijn | Constantine |
| Constantijn de Grote | Constantine I |
| Constantijn der Nederlanden | Prince Constantijn of the Netherlands |
| Constantijn Huygens | Constantijn Huygens |
| Constantijn I van Griekenland | Constantine I of Greece |
| Constantijn II van Griekenland | Constantine II of Greece |
| Constantijn II van Rome | Constantine II |
| Constantijn III | Constantine III |
| Constantijn III Herakleios | Constantine III |
| Constantijn III van Brittannië | Constantine III of Britain |
| Constantijn III van Rome | Constantine III |
| Constantijn IV | Constantine IV |
| Constantijn IX Monomachos | Constantine IX Monomachos |
| Constantijn Konstantinovitsj van Rusland | Grand Duke Konstantin Konstantinovich of Russia |
| Constantijn Nikolajevitsj van Rusland | Grand Duke Constantine Nicholaevich of Russia |
| Constantijn Pavlovitsj van Rusland | Grand Duke Constantine Pavlovich of Russia |
| Constantijn V Kopronymos | Constantine V |
| Constantijn V van Byzantium | Constantine V |
| Constantijn VI | Constantine VI |
| Constantijn VI van Byzantium | Constantine VI |
| Constantijn VII Porphyrogennetos | Constantine VII |
| Constantijn VIII | Constantine VIII |
| Constantijn VIII van Byzantium | Constantine VIII |
| Constantijn X Doukas | Constantine X |
| Constantijn XI Laskaris | Constantine Laskaris |
| Constantijn XI Palaiologos Dragases | Constantine XI |
| Constantijn Ypsilanti | Constantine Ypsilantis |
| Constantin Anghelescu | Constantin Anghelescu |
| Constantin Brâncoveanu | Constantin Brâncoveanu |
| Constantin Brâncuşi | Constantin Brâncuşi |
| Constantin Sănătescu | Constantin Sănătescu |
