Conradus is a masculine given name. It is often a latinisation of the name Conrad or Konrad, but is also a Dutch given name. People called Conradus include:
Conradus Celtis (AKA Conrad Celtes, 1459–1508), German humanist and poetConradus Dasypodius (AKA Cunradus, Konrad and Conrad Dasypodius, 1532–1600), Swiss mathematicianConradus de Pistoria (fl. early 15th century), Italian composerConradus Eubel (AKA Konrad Eubel, 1842–1923), German Franciscan historianConradus Gesnerus (AKA Conrad Gessner, 1516–65), Swiss naturalist and bibliographerConradus Hirsaugiensis (AKA Conrad of Hirsau, c. 1070 – c. 1150), German Benedictine monk and writerConradus Leemans (1809–93), Dutch EgyptologistConradus Megenbergensis (AKA Conrad of Megenberg, 1309–74), German Catholic writer and scholarConradus Mutianus (AKA Konrad Mutian, 1470–1526), German humanistConradus Sapientis (AKA Konrad Witz, 1400/1410 – 1445/1446), German painterConradus Saxo (AKA Conrad of Saxony and Conradus Holyinger, before 1245 – 1279), German Franciscan friar and writerConradus Viëtor (1588–1657), Dutch Lutheran minister whose portrait was painted by Frans HalsConradus Vorstius (AKA Conrad Vorstius and Conrad or Konrad Vorst, 1569–1622), German-Dutch Protestant theologian