Jón Guðmundsson
Jón Guðmundsson is the name of the following people:
- Jón Guðmundsson (Scholar) ( Jón lærði Guðmundsson ; 1574–1658), Icelandic scholar and magician
- Jón Guðmundsson (politician) (1807–1875), Icelandic journalist and politician
- Jón Guðmundsson (chess player) (1904–1980), Icelandic chess player