Blankenheim may refer to:
Places Blankenheim, North Rhine-Westphalia, a municipality in western Germany Blankenheim, Saxony-Anhalt, a municipality in eastern Germany Blankenheim Castle, a schloss above the village of Blankenheim in the Eifel mountains of Germany
People Clara Elisabeth of Manderscheid-Blankenheim (1631–1688), canoness at Thorn Abbey and Essen Abbey, and deaness at Elten Abbey Leon Young de Blankenheim (1837?–1863), French Army soldier Frederick of Blankenheim (c. 1355–1423), bishop of Strasbourg as Friedrich II and bishop of Utrecht as Frederik III
Surname Ed Blankenheim (1934–2004), American civil rights activist and one of the original Freedom Riders Karoline von Manderscheid-Blankenheim (1768–1831), princess consort of Liechtenstein Toni Blankenheim (1921–2012), German operatic baritone Walter Blankenheim (1926–2007), German pianist and teacher