Special Branch is a British television series made by Thames Television for ITV and shown between 1969-1970 and 1973-1974. A police drama series, the action was centred on members of the Special Branch counterintelligence and counterterrorism department of the London Metropolitan Police. The first two series starred Derren Nesbitt, before the programme went through an overhaul, with George Sewell taking over as the new lead.

Thames Television, commonly simplified to just Thames, was a franchise holder for a region of the British ITV television network serving London and surrounding areas from 30 July 1968 until the night of 31 December 1992. Thames Television broadcast from 09:25 Monday morning to 17:15 Friday afternoon at which time it would hand over to London Weekend Television (LWT).