| constant | uninterrupted |
| Constant Altitude Plan Position Indicator | Constant Altitude Plan Position Indicator |
| Constant bit rate | Constant bitrate |
| Constant Fornerod | Constant Fornerod |
| Constant Ier | Constans |
| Constant II | Constans II |
| Constant Nieuwenhuis | Constant Nieuwenhuys |
| Constant Troyon | Constant Troyon |
| constante | constant |
| Constante astronomique | Astronomical constant |
| constante d'Einstein | Einstein's constant |
| Constante de Boltzmann | Boltzmann constant |
| Constante de De Bruijn-Newman | De Bruijn-Newman constant |
| Constante de Faraday | Faraday constant |
| Constante de Hubble | Hubble constant |
| Constante de Kaprekar | Kaprekar number |
| Constante de la gravitation | Gravitational constant |
| Constante de Landau-Ramanujan | Landau-Ramanujan constant |
| Constante de Madelung | Madelung constant |
| Constante de Meissel-Mertens | Meissel-Mertens constant |
| Constante de Oort | Oort constant |
| Constante de Rydberg | Rydberg constant |
| Constante de Stefan-Boltzmann | Stefan-Boltzmann constant |
| Constante fondamentale | Fundamental constant |
| Constante gravitationnelle | Gravitational constant |
| Constante magique | Magic constant |
| Constante magnétique | Magnetic constant |
| Constante oméga | Omega constant |
| Constante universelle des gaz parfaits | Gas constant |
| Constante électrique | Electric constant |
| Constantes mathématiques | Mathematical constants |
| Constantijn Huygens | Constantijn Huygens |
| Constantin | Constantine |
| Constantin Andréou | Constantine Andreou |
| Constantin Balmont | Konstantin Balmont |
| Constantin Bodin | Constantine Bodin |
| Constantin Brâncuşi | Constantin Brâncuşi |
| Constantin Cantemir | Constantin Cantemir |
| Constantin Carathéodory | Constantin Carathéodory |
| Constantin Constantinovitch | Grand Duke Konstantin Konstantinovich of Russia |
| Constantin Constantinovitch de Russie | Grand Duke Konstantin Konstantinovich of Russia |
| Constantin de Hohenzollern-Hechingen | Constantine |
| Constantin des Pictes | Caustantín of the Picts |
| Constantin Ier | Constantine I |
| Constantin Ier Asên | Constantine Tikh of Bulgaria |
| Constantin Ier de Grèce | Constantine I of Greece |
| Constantin Ier Şerban Basarab | Constantin Şerban |
| Constantin II | Constantine II |
| Constantin II Brâncoveanu | Constantin Brâncoveanu |
| Constantin II de Grèce | Constantine II of Greece |
| Constantin III | Constantine III |
| Constantin III de Bretagne | Constantine III of Britain |
| Constantin Ion Parhon | Constantin Ion Parhon |
| Constantin IV | Constantine IV |
| Constantin IX | Constantine IX Monomachos |
| Constantin Kanaris | Constantine Kanaris |
| Constantin Kousnetzoff | Constantin Kousnetzoff |
| Constantin Lascaris | Constantine Lascaris |
| Constantin Nicolaevitch de Russie | Grand Duke Constantine Nicholaevich of Russia |
| Constantin Ostrogski | Konstanty Ostrogski |
| Constantin Paparregopoulos | Constantine Paparrigopoulos |
| Constantin Pavlovitch de Russie | Grand Duke Constantine Pavlovich of Russia |
| Constantin Phaulkon | Constantine Phaulkon |
| Constantin Rokossovski | Konstantin Rokossovsky |
| Constantin Simonov | Konstantin Simonov |
| Constantin Stanislavski | Constantin Stanislavski |
| Constantin Tsiolkovski | Konstantin Tsiolkovsky |
| Constantin V | Constantine V |
| Constantin V de Constantinople | Patriarch Constantine V of Constantinople |
| Constantin VI | Constantine VI |
| Constantin VI de Constantinople | Patriarch Constantine VI of Constantinople |
| Constantin VII Porphyrogénète | Constantine VII |
| Constantin VIII | Constantine VIII |
| Constantin Vladimirski | Konstantin of Rostov |
| Constantin X | Constantine X |
| Constantin XI Paléologue | Constantine XI |
| Constantine | Constantine |
| Constantine Maroulis | Constantine Maroulis |
| Constantine Samuel Rafinesque | Constantine Samuel Rafinesque |
