Sir John Ogilvy Rennie, KCMG (13 January 1914 – 30 September 1981)[1] was the 6th Director of the Secret Intelligence Service (MI6) from 1968 to 1973.

He was once the head of the Information Research Department (IRD), a secret branch of the UK Foreign Office dedicated to pro-colonial and anti-communist propaganda during the Cold War.

[2][3] During World War II he worked at an organisation in Baltimore combating German propaganda.

[2] During the Suez Crisis he chaired a committee established to disseminate British propaganda in the Middle East.

[3][2] On 15 January 1973, Rennie's son Charles Tatham Ogilvy Rennie, and his daughter-in-law were arrested for an alleged involvement in the importation of large quantities of heroin from Hong Kong.