House Grafton of Gulltown is a noble house from the Vale of Arryn. They rule over Gulltown, a main port and populated city. The current Lord of Gulltown is Galbart Grafton.

They blazon their arms with a burning tower in yellow, within a black pile, upon flaming red. Their words do not appear in the books.

The Graftons were an Andal house during the Andal invasion. Gerold Grafton was an Andal knight from Andalos who established the rule of House Grafton over Gulltown.