Aðalsteinsson
Aðalsteinsson is an Icelandic patronymic surname, literally meaning "son of Aðalsteinn". It may refer to:
- Aðalsteinn Aðalsteinsson, Icelandic footballer
- Arnór Sveinn Aðalsteinsson, Icelandic footballer
- Baldur Ingimar Aðalsteinsson, Icelandic footballer
- Jón Hnefill Aðalsteinsson, Icelandic scholar and folklorist
- Þorbergur Aðalsteinsson, Icelandic handball player