The Raid on Santorini took place on 24 April 1944 as part of the Mediterranean Campaign in World War II. It was conducted by the British Special Boat Service, against the mixed German and Italian garrison on the island of Santorini (Thera) in the Aegean Sea. The raid was made in tandem with similar operations at the islands of Ios, Mykonos and Amorgos that aimed to destroy Axis naval observation posts and radio stations on the Cycladic islands.

The Special Boat Service (SBS) is the special forces unit of the United Kingdom's Royal Navy. The SBS can trace its origins back to the Second World War when the Army Special Boat Section was formed in 1940. After the Second World War, the Royal Navy formed special forces with several name changes—Special Boat Company was adopted in 1951 and re-designated as the Special Boat Squadron in 1974—until on 28 July 1987 when the unit was renamed as the Special Boat Service after assuming responsibility for maritime counter-terrorism. Most of the operations conducted by the SBS are highly classified, and are rarely commented on by the British government or the Ministry of Defence, owing to their sensitive nature.The Special Boat Service is the maritime special forces unit of the United Kingdom Special Forces and is described as the sister unit of the British Army 22nd Special Air Service Regiment (22nd SAS), with both under the operational control of the Director Special Forces. In October 2001, full command of the SBS was transferred from the Commandant General Royal Marines to the Commander-in-Chief Fleet. On 18 November 2003, the SBS were given their own cap badge with the motto "By Strength and Guile". The SBS has traditionally been manned mostly by Royal Marines Commandos.