Bjarni Jónsson
Bjarni Jónsson is the name of the following people:
- Bjarni Jónsson (mathematician) (1920–2016), Icelandic mathematician
- Bjarni Jónsson (painter) (1934–2008), Icelandic painter
- Bjarni Jónsson (soccer player) (born 1965), Icelandic soccer player
