Sanday is one of the inhabited islands in the Orkney Islands, off the north coast of Scotland. With an area of 50.43 square kilometres (19.5 sq mi), it is the third largest of the Orkney Islands. The main centres of population are Lady Village and Kettletoft. Sanday can be reached by Orkney Ferries or plane from Kirkwall on the Orkney Mainland. Cultural activities revolve around the school.
Start Point lighthouse on Sanday was completed on 2 October 1806 by engineer Robert Stevenson. It was the first Scottish lighthouse to have a revolving light and since 1915 has exhibited distinctive black and white vertical stripes which are unique in Scotland. The light was automated in 1962 and is powered by a bank of 36 solar panels.
Despite the presence of the lighthouse, HMS Goldfinch was wrecked in fog on Start Point in 1915.
Sanday Airport (IATA: NDY, ICAO: EGES) is located 20 NM (37 km; 23 mi) north northeast of Kirkwall Airport on Sanday, Orkney Islands, Scotland.
Sanday Aerodrome has a CAA Ordinary Licence (Number P541) that allows flights for the public transport of passengers or for flying instruction as authorised by the licensee (Orkney Islands Council). The aerodrome is not licensed for night use.