History
House Greyjoy claims descent from House Greyiron of Orkmont, the house of the Grey Kings, most notably Urron Redhand.
Houses sworn to Pyke
- House Blacktyde of Blacktyde
- House Botley of Lordsport
- House Codd
- House Drumm of Old Wyk
- House Farwynd of the Lonely Light
- House Farwynd of Sealskin Point
- House Goodbrother of Hammerhorn
- House Goodbrother of Shatterstone
- House Harlaw of Ten Towers
- House Humble
- House Kenning of Harlaw
- House Merlyn of Pebbleton
- House Myre of Harlaw
- House Netley
- House Orkwood of Orkmont
- House Saltcliffe of Saltcliffe
- House Sharp
- House Shepherd
- House Sparr of Great Wyk
- House Stonehouse of Old Wyk
- House Stonetree of Harlaw
- House Sunderly of Saltcliffe
- House Tawney of Orkmont
- House Volmark of Harlaw
- House Weaver
- House Wynch of Iron Holt, on Pyke
Extinct Houses of the Iron Islands
- House Greyiron of Orkmont
- House Hoare of Orkmont
Greyjoy characters in the books
- Aeron Greyjoy, called Aeron Damphair
- Alannys Greyjoy, formerly of House Harlaw
- Asha Greyjoy
- Balon Greyjoy
- Euron Greyjoy, called Crow's Eye
- Theon Greyjoy
- Victarion Greyjoy