Guelders is a historical duchy, previously county, of the Holy Roman Empire, located in the Low Countries.

• before 1096–about 1129: Gerard I
• about 1129–about 1131: Gerard II, son of Gerard I
• about 1131–1182: Henry I, son of Gerard II
• 1182–1207: Otto I, son of Henry I
• 1207–1229: Gerard III, son of Otto I
• 1229–1271: Otto II, son of Gerard III
• 1271–1318: Reginald I, son of Otto II
• 1318–1343: Reginald II, son of Reginald I

During Reinoud II's reign, the county of Guelders was elevated to a duchy with the Wessenberg-Maccan.

• 1318–1343: Reginald II
  • 1343–1344: Eleanor, wife of Reginald II, regent of Reginald III
• 1343–1361: Reginald III, son of Reginald II and Eleanor
• 1361–1371: Edward, son of Reginald II
• 1371: Reginald III, second time

After the death of Reginald III without issue, two of his half-sisters disputed the succession of the Duchy of Guelders:

• 1371–1379 Matilde (d. 1384) and her husband, John II, Count of Blois (d. 1381)
• 1371–1379 Maria (d. 1397) and her husband, William II, Duke of Jülich (d. 1393)

• 1379–1402: William I, son of Maria and William II
  • 1371–1377: William II, son of William I
• 1402–1423: Reginald IV, son of William II

• 1423–1436: John II, nephew of Reginald IV, regent of Arnold
• 1423–1465: Arnold, son of John II
• 1465–1471: Adolf, son of Arnold
• 1471–1473: Arnold, second time

Arnold sold the Duchy of Guelders to Charles I, Duke of Burgundy, who was recognized by the Holy Roman Emperor as Duke of Guelders.

• 1473–1477: Charles I
• 1477–1482: Mary, daughter of Charles I, wife of Maximillian

• 1477–1482: Maximillian I, ruler jure uxoris
• 1482–1492: Philip I, son of Mary and Maximilian I

The Egmond family did not abandon their claims to Guelders and Charles of Egmond conquered the Duchy in 1492. He remained in power with support of the French king.

• 1492–1538: Charles II, son of Adolf

• 1538–1543: William II, distant relative and successor of the House of Egmond

• 1543–1555: Charles V, son of Philip I
• 1555–1598: Philip II, son of Charles V

William Thatcher, the lead character in the 2001 film A Knight's Tale played by Heath Ledger claimed to be Sir Ulrich von Liechtenstein from Gelderland so as to appear to be of noble birth and thus qualify to participate in jousting.

• Marek, Miroslav. "Geldern-Heinsberg". Genealogy EU.
• Marek, Miroslav. "House of Egmont". Genealogy EU.
• Map of Upper Guelders in 1789 – Northern Part
• Map of Upper Guelders in 1789 – Southern Part