The Hornfoots are a clan of Free Folk.
The Hornfoots now march in the army of King-Beyond-the-Wall, Mance Rayder, who has united all of the different wildling clans to assault the Wall and force their passage to the south. Mance points out that the Thenn hate the Hornfoots, and that the Hornfoots hate the Ice-river clans.
In the books
In the A Song of Ice and Fire novels, the Hornfoots are known for wearing nothing on their feet, even in the sub-arctic snows of the lands beyond the Wall, which turns their soles as hard as boiled leather. They are enemies of the Nightrunners.