Human beings, each considered as a single actor within society
Notable Individuals
- Dalberg-Acton, John (1834-1902) - British historian, known as Lord Acton
- Douglass, Frederick (1818-1895) - 19th century American abolitionist, known for his autobiography as a slave
Other Individuals
- Darius I (Δαρεῖος; 550-486 BCE) - King of the Achaemenid Empire (522-486 BCE)
- Davis, Horace B. (1898-1999) - American professor of economics
- Dawkins, Clinton Edward (1859-1905) - British bureaucrat, partner in the London branch of J. S. Morgan & Co.
- Debs, Eugene V. (1855-1926) - American political activist, five-time presidential candidate for the Socialist Party of America
- de Havilland, Olivia (1916-2020) - British-American actress, winner of two Oscar Best Actress awards
- De Niro, Robert (1943- ) - American Oscar-winning actor, starred in Raging Bull and Godfather II
- DiLorenzo, Thomas (1954- ) - Professor of economics and author
- Diodorus Siculus (Διόδωρος) - Greek historian who lived in Sicily during the first century BCE
- Dion of Syracuse (Δίων ὁ Συρακόσιος; 408-354 BCE) - Brother-in-law of Dionysius I, who was banished by Dionysius II (son of Dionysius I) but eventually returned to Syracuse and deposed the latter
- Dionysius I (Διονύσιος; 430-367 BCE) - Tyrant of Syracuse (405-367 BCE)
- Domitian (DOMITIANVS AVGVSTVS GERMANICVS; 51-96) - Roman emperor in the years 81-96 CE
- Dǒng Zhòngshū (董仲舒; 179-104 BCE) - Chinese philosopher and writer
- Douglas, Kirk (1916-2020) - American actor, star of Paths of Glory and Spartacus, recipient of the AFI Life Achievement award
- Douglas, Melvyn (1901-1981) - American stage and movie actor, winner of Oscar, Tony and Emmy awards
- Dreyfuss, Richard (1947- ) - American actor, winner of Oscar for The Goodbye Girl
- Dunaway, Faye (1941- ) - American movie actress, winner of Best Actress Oscar for Network
- Dunoyer, Charles (1786-1862) - French economist, co-founder of Le Censeur
- Dupin, Charles (1784-1873) - French mathematician, politician, engineer and economist
- Dutt, R. Palme (1896-1974) - British journalist, General Secretary of the Communist Party of Great Britain (1939-1941)
- Duvall, Robert (1931- ) - American movie actor, producer and director