The Diocese of Skálholt is a suffragan diocese of the Church of Iceland. It was the estate of the first bishop in Iceland, Isleifr Gizurarson, who became bishop in 1056.. His son, Gizurr, donated it to become the official see. The Diocese was amalgamated in 1801 and now forms part of the Diocese of Iceland under the leadership of the Bishop of Iceland. In 1909, the diocese was restored as a suffragan see, with the Bishop of Skálholt being a suffragan bishop to the Bishop of Iceland.

Skálholt is a historical site in the south of Iceland, at the river Hvítá.