Jón Halldórsson (disambiguation)
# Jón Halldórsson (disambiguation)

Jón Halldórsson (c. 1275 - 1339) was a Roman Catholic clergyman who became bishop of Iceland.

Jón Halldórsson may also refer to:

* Jón Halldórsson (athlete, born 1889)
* Jón Halldórsson (athlete, born 1982)
