Þorsteinn Þorsteinsson (disambiguation)
# Þorsteinn Þorsteinsson (disambiguation)

Þorsteinn Þorsteinsson may refer to:

* Þorsteinn Þorsteinsson (1880–1979), Icelandic economist and Esperantist
* Þorsteinn Þorsteinsson (athlete) (born 1947), Icelandic athlete who competed in the 800 metres
* Þorsteinn Þorsteinsson (footballer) (born 1964), Icelandic footballer
