Sir Donald Logan KCMG (25 August 1917 – 23 October 2009) was a British diplomat who was closely involved with the Suez crisis, afterwards ambassador to Guinea, Bulgaria and the UN Conference on the Law of the Sea.
Donald Arthur Logan was educated at Solihull School and then worked in insurance, becoming a Fellow of the Chartered Insurance Institute in 1939. During World War II he served in the Royal Artillery. He joined the Foreign Service in 1945 and served at Tehran and Kuwait before being appointed in 1956 to be assistant private secretary to the Foreign Secretary, Selwyn Lloyd. In this capacity he was closely involved with the Suez Crisis and was present at the meetings leading to the Sèvres Protocol in October 1956. He said much later that he was also present at the House of Commons on 20 December 1956 and was the only person there who knew that the Prime Minister, Anthony Eden, lied to the House about Britain's foreknowledge of Israel's attack on Egypt.
Logan then served at Washington, D.C., 1958–60, then as Britain's first resident Ambassador to Guinea 1960–62, at the Foreign Office 1962–64, as Information Counsellor at the embassy in Paris 1964–70, as Ambassador to Bulgaria 1970–73, as deputy UK Representative to NATO 1973–75, and finally as leader of the UK delegations to the United Nations Conference on the Law of the Sea 1976–77 and to the Conference on Marine Living Resources of Antarctica 1978–80.
In 1957, Logan married Irène Jocelyne Angèle Everts (1922), daughter of Dr Gerhard Robert Everts (1875–1942; nl:Robert Everts), who was of Dutch descent but who had become a Belgian citizen in 1898 and served in the Belgian diplomatic service from 1900, lastly as ambassador to Madrid (1932–1938).
- LOGAN, Sir Donald (Arthur), Who Was Who, A & C Black, 1920–2007; online edn, Oxford University Press, Dec 2012
- Sir Donald Logan (obituary), The Telegraph, London, 1 November 2009
- Sir Donald Logan obituary, The Guardian, London, 3 November 2009
- Sir Donald Logan: Civil servant who assisted the Foreign Secretary Selwyn Lloyd during the Suez crisis, The Independent, London, 3 November 2009
- "No. 34758". The London Gazette (Supplement). 22 December 1939. p. 8536.
- Secret accord shows Eden lied over Suez, The Times, London, 17 October 1996, page 11
- "No. 42185". The London Gazette. 4 November 1960. p. 7461.
- "No. 45142". The London Gazette. 3 July 1970. p. 7378.
- "No. 43667". The London Gazette (Supplement). 12 June 1965. p. 5475.
- "No. 47234". The London Gazette (Supplement). 11 June 1977. p. 7083.
- Nederland's Patriciaat 92 (2013), p. 254.
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