Hook Head (Irish: Rinn Duáin) is a headland in County Wexford, Ireland located on the east side of the estuary of the three sisters rivers (the Nore, Suir and the Barrow). It is part of the Hook peninsula and is adjacent to the historic townland of Loftus Hall. It is situated on the R734, 50 km (31 mi) from Wexford town.
Hook Head is said to have found its way into common English usage in the saying "By Hook or by Crook." It is claimed that the phrase is derived from a vow to take Waterford by Hook (on the Wexford side of Waterford Estuary) or by Crook (a village on the Waterford side) made by Oliver Cromwell.
This area is renowned as the location of Hook Lighthouse, the oldest working lighthouse in the world. Access to the lighthouse is by guided tours only which are available all year around. At the foot of the light house there is a cafe, gift shop and a maritime exbhition. The lighthouse is part of Ireland's Ancient East, information about attractions on the peninsula is available at the Ireland's Ancient East sign.
On Wednesday the 10th of October 2007 it had been reported that significant amount of oil has been found off the coast of Hook head, in the north Celtic Sea. An Irish company, Providence Resources have drilled test holes and are said to have discovered good quality oil.
Coordinates: 52°07′25.68″N 6°55′44.76″W / 52.1238000°N 6.9291000°W