Hannesson
Hannesson is an Icelandic patronymic, literally meaning "son of Hannes". Notable people with the name include:
- Eggert Hannesson, 16th-century Icelandic hirðstjóri and lawspeaker
- Guðbjartur Hannesson, Icelandic politician
- Hannes Marino Hannesson, Canadian politician
- Pálmi Hannesson, Icelandic naturalist and rector of Menntaskólinn í Reykjavík