Birnbeck Pier, also known as the 'Old Pier', is a pier situated on the Bristol Channel in Weston-super-Mare, North Somerset, England, approximately 18 miles south-west of Bristol. It is the only pier in the country which links the mainland to an island, linking to Birnbeck Island, a 1.2 hectares rocky island just to the west of Worlebury Hill. The grade II* listed pier was designed by Eugenius Birch and opened in 1867. The gothic toll house and pierhead buildings were designed by local architect Hans Price. The pier has been closed to the public since 1994 and is now on the Buildings at Risk Register.
During the second half of the 19th and early 20th centuries the pier was popular both with locals and tourists to the town. As a boarding point for steamers plying their trade in the Bristol Channel, it underwent various extensions and modifications over the years. During the Second World War the pier was commissioned as HMS Birnbeck by the Admiralty as part of the Directorate of Miscellaneous Weapons Development for research into new weapons. The pier reopened after the war, but the number of visitors and steamer passengers declined. The final excursion visited the pier in 1979.