Isenburg may refer to:

Places Neu-Isenburg, town in the district of Offenbach in Hesse, Germany Isenburg, Rhineland-Palatinate, municipality in the district of Neuwied, Germany , village in the borough of Wipperfürth in Oberbergischen Kreis in North Rhine-Westphalia, Germany Isenburg (Horb), village in the borough of Horb in the district of Freudenstadt, Baden-Württemberg, Germany

Territories, castles and palaces County of Isenburg, a territorial lordship that was ruled by the lords, counts and princes of Isenburg , castle near Hattingen in North Rhine-Westphalia, Germany , castle in Cologne, Germany , castle in Isenburg near Dierdorf in the Westerwald forest, Germany , castle near Essen in North Rhine-Westphalia, Germany Isenburg (Saxony), castle between Hartenstein and Wildbach, Germany Isenburg Castle in Offenbach am Main, Germany , former circular rampart site near Landringhausen, borough of Barsinghausen, Germany

People a Rhenish aristocratic family, see County of Isenburg (1460–1522), German noblewoman Arnold II of Isenburg (died 1259), Archbishop of Trier Diether von Isenburg (1412–1482), German priest, Archbishop of Mainz (1459–1462 and 1475–1482) Ernst Graf von Isenburg (1584-1664), Spanish general in the Thirty Years' War (1900–1974), President of the Stille Hilfe relief organisation Wilhelm Karl Prinz zu Isenburg (1903–1956), German genealogist

See also Isenburg-Büdingen, a former county of southern Hesse, Germany Isenberg (disambiguation)