Justinus

Justinus may refer to:


 * Justinus van der Brugghen (1804–1863), Dutch politician
 * Justinus Darmojuwono (1914–1994), Indonesian cardinal
 * Justinus Kerner (1786–1862), German poet
 * Justinus van Nassau (1559–1631), Dutch army commander, only illegitimate son of William of Orange
 * Oskar Justinus (1839–1893), German dramatist