Ursinus

Ursinus may refer to:
 * Ursinus College, a liberal arts college in Collegeville, Pennsylvania.
 * The first bishop of the diocese of Bourges, Saint Ursinus
 * Ursinus the Abbot, author of the Life of Leodegar († after 690)
 * Johannes Heinrich Ursinus (1608–1667), Lutheran theologian from Regensburg
 * An alias of the Antipope Ursicinus († after 384)
 * Zacharias Ursinus, a German theologian († 1583)
 * Oskar Ursinus, the German aviation pioneer († 1952)