Þorsteinn Jónsson
Þorsteinn Jónsson is the name of the following people:
- Þorsteinn Jónsson , actual name of Þórir Bergsson (1885–1970), Icelandic writer
- Þorsteinn Jónsson , actual name of Þorsteinn frá Hamri (* 1938), Icelandic writer
- Þorsteinn Jónsson (director) (born 1946), Icelandic director
- Þorsteinn M. Jónsson (* 1963), Icelandic economist