Guðjónsson or Gudjonsson is a surname of Icelandic origin, meaning son of Guðjón. In Icelandic names, the name is not strictly a surname, but a patronymic.
Notable people with the name include:
Bjarni Guðjónsson (born 1979), Icelandic footballer
Eyþór Guðjónsson (born 1968), Icelandic actor
Gísli Guðjónsson (born 1947), Icelandic forensic psychologist
Guðjón Már Guðjónsson (born 1972), Icelandic entrepreneur and businessman
Gudmundur Orn Gudjonsson (born 1982), Icelandic archer
Heimir Guðjónsson (footballer, born 1937), Icelandic footballer
Heimir Guðjónsson (footballer, born 1969), Icelandic footballer
Joey Guðjónsson (born 1980), Icelandic footballer
Þórður Guðjónsson (born 1973), Icelandic footballer
Þorsteinn Guðjónsson (born 1969), Icelandic footballer
Snorri Guðjónsson (born 1981), Icelandic handball player
