Martin Sinclair Frankland Hood,, generally known as Sinclair Hood, was a British archaeologist and academic. He was Director of the British School at Athens from 1954 to 1962, and led the excavations at Knossos from 1957 to 1961. He turned 100 in January 2017 and died in January 2021, two weeks short of his 104th birthday.

The British School at Athens (BSA) is an institute for advanced research, one of the eight British International Research Institutes supported by the British Academy, that promotes the study of Greece in all its aspects. Under UK law it is a registered educational charity, which translates to a non-profit organisation in American and Greek law. It also is one of the 19 Foreign Archaeological Institutes defined by Hellenic Law No. 3028/2002, "On the Protection of Antiquities and Cultural Heritage in General," passed by the Greek Parliament in 2002. Under that law the 17 accredited foreign institutes may perform systematic excavation in Greece with the permission of the government.