'Dipford-Frinton' was a British uncompleted operation by the Special Operations Executive in German-occupied Norway to work with the central leadership of the Milorg military resistance organisation as technical advisers on railways, telecommunications, information, and propaganda (November 1944).

The aeroplane carrying the two-man party of P. Deinboll and A. Gjestland disappeared over the North Sea, and with this the plan was put into abeyance.