Eric of Pomerania KG (1381 or 1382 – 3 May 1459) was King Eric (Eirik) III of Norway (1389–1442), King Eric VII of Denmark (1396–1439), and King Eric (Ericus) of Sweden (1396–1439; known there in history mainly as Erik av Pommern).

He is the first King of the Nordic Kalmar Union, succeeding his adoptive mother Margaret I of Denmark.

Referring to Eric of Pomerania as King Eric XIII of Swedenis a later invention, counting backwards from Eric XIV (1560–1568), who adopted his numeral according to a fictitious history of Sweden.

Going back into prehistory, it is not known how many Swedish monarchs were named Eric before this one (at least six were), so it would be speculative to try to affix a mathematically accurate one here.