Boscastle is a village and fishing port on the north coast of Cornwall, England, in the civil parish of Forrabury and Minster. It is 14 miles (23 km) south of Bude and 5 miles (8 km) northeast of Tintagel. The harbour is a natural inlet protected by two stone harbour walls built in 1584 by Sir Richard Grenville and is the only significant harbour for 20 miles (32 km) along the coast. The village extends up the valleys of the River Valency and River Jordan. Heavy rainfall on 16 August 2004 caused extensive damage to the village.

Sir Richard Grenville, also spelt Greynvile, Greeneville, and Greenfield, was an English privateer and explorer. Grenville was lord of the manors of Stowe, Cornwall and Bideford, Devon. He subsequently participated in the plantations of Ireland specifically the Munster plantations, the English colonisation of the Americas and the repulse of the Spanish Armada.