Jón Kristjánsson
Jón Kristjánsson is the name of the following people:
- Jón Kristjánsson (cross-country skier) (1920–1996), Icelandic cross-country skier
- Jón Kristjánsson (politician) (* 1941), Icelandic politician
- Jón Stefán Kristjánsson (* 1958), Icelandic actor