title: Jón Halldórsson (disambiguation)
text: # 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)
  