Dunnet Head is a peninsula in Caithness, on the north coast of  Scotland, that includes the most northerly point of the mainland of Great Britain. The point, known as Easter Head, is at (grid reference ), about west-northwest of John o' Groats and about from Duncansby Head. Dunnet Head can be seen also as the western limit of the Pentland Firth on the firth's southern, or Caithness, side (Duncansby Head is the eastern limit).