Sir Donald Charles Hopson KCMG DSO (31 August 1915 – 26 August 1974) was a British diplomat. He was Ambassador to Laos from 1962 to 1965, Ambassador to Mongolia from 1965 to 1966, Chargé d'affaires to China from 1965 to 1968 (during which he was caught up in the arson attacks on the Chargé d'affaires Office in Peking, now Beijing, on 22 August 1967), Ambassador to Venezuela from 1969 to 1972, and Ambassador to Argentina from 1973 to 1975.