Clifford Walter Dupont GCLM ID (6 December 1905 – 28 June 1978) was a British-born Rhodesian politician who served in the internationally unrecognised positions of officer administrating the government (from 1965 until 1970) and president (from 1970 to 1975). Born in London and qualifying as a solicitor, Dupont served during the Second World War as an officer of the British Royal Artillery in North Africa before first visiting Southern Rhodesia in 1947. He returned a year later, started a ranch and emigrated full-time during the early 1950s, by which time the country had become a territory of the Federation of Rhodesia and Nyasaland.

When Rhodesia's government under Ian Smith issued the Unilateral Declaration of Independence from Britain on 11 November 1965, Dupont, as Deputy Prime Minister, was the second to sign. Smith attempted to have Dupont named as Governor-General in place of the British-appointed Governor, Humphrey Gibbs, but failing this instead made him Officer Administering the Government. He held this post until 1970, when he became president following the declaration of a republic. After suffering from ill health during this last appointment, he retired at 1976 and died in 1978.

Of Huguenot ancestry, Dupont was born in London on 6 December 1905, to Alfred Walter and Winifred Mary Dupont into a family which consisted of two older brothers and an elder, and subsequently a younger sister. His father founded a commercial firm dealing largely in the "rag trade". Dupont himself was educated at Bishop's Stortford College and Clare College, Cambridge where he read law. He qualified as a solicitor in 1929 and set up his own firm in 1933.

Having served in the Royal Artillery Officer Training Corps while at university, on the outbreak of World War II he was commissioned into the Artillery and served as an adjutant for a light anti-aircraft battalion. He served in North Africa and was on General Eisenhower's staff during the liberation of Europe in 1944; he ended the war as a War Office official.

In 1947 Dupont briefly visited Southern Rhodesia, returning in 1948. He bought land at Featherstone, south of Salisbury (now Harare), which he turned into a successful cattle ranch. He emigrated full time in the early 1950s – by which time the Federation of Rhodesia and Nyasaland had come into being, including Southern Rhodesia as a territory – but was not initially involved in politics. Tragedy struck him several times later in the decade: in 1957 his second wife died, and in 1958 his son and daughter were both killed in an air crash.

He entered politics in 1958, winning on the Dominion Party ticket in the Fort Victoria (now Masvingo) federal constituency. Four years later, he became the member for Charter in the Legislative Assembly of Rhodesia, this time standing for the Rhodesian Front (RF). At the same time, he was appointed Minister for Justice.

However, Dupont was not pleased with the performance of the prime minister, Winston Field, and after Field's failure to win independence from the United Kingdom in 1963 following the dissolution of the Central African Federation, he and Desmond Lardner-Burke, known as "the cowboys", joined forces to overthrow Field and install Ian Smith as prime minister.

In October 1964, Dupont thwarted Sir Roy Welensky's attempt to re-enter politics in Rhodesia following the break-up of the Federation. Welensky had assumed the leadership of the opposition United Federal Party (which he renamed the Rhodesia Party), and was contesting a by-election in Arundel, but Dupont deliberately resigned his constituency in Charter to oppose him. Dupont soundly defeated Welensky by 1079 votes to 633.