Whitesand Bay (Cornish: Porth Senan, meaning cove at Sennen) is a wide sandy bay near Land's End in west Cornwall, England, United Kingdom. It stretches for one mile between the headlands of Pedn-mên-du and Aire Point. and contains the village of Sennen Cove. It is also a landing point for the Atlantic Crossing 1 international telecommunications cable.
Whitesand Bay beach is popular with surfers. At high tide, the beach is divided in two: Sennen Cove beach to the south (more popular for its size, facilities and surf schools), and Gwynver beach to the north (popular for its typically better surfing waves and walking distance of Trevedra Farm campsite). At the south end, at Sennen Cove, there are toilet facilities, a surf shop, a restaurant, and two car parks, one in a large field above the cliff, and another beside the beach. Dogs are banned on the beach from Easter Day to 1 October every year. The South West Coast Path runs along the dunes behind the beach.