Porthoustock is a hamlet near St Keverne in Cornwall, England, United Kingdom, on the east coast of Lizard Peninsula. Aggregates are quarried nearby and Porthoustock beach is dominated by a large concrete stone silo that was once used to store stone ready to load ships but is now disused. Coastal trading ships of up to 82 metres can dock alongside the pier along the southern edge of the beach to be loaded with stone. Fishing boats operate from the pebble beach, with lobster and crab potting, net fishing and hand lines as the principal fishing methods. The South West Coast Path passes through Porthoustock.