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 (550-486 BCE) - King of the Achaemenid Empire (522-486 BCE)
- Dion of Syracuse (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 (430-367 BCE) - Tyrant of Syracuse (405-367 BCE)
- Domitian (51-96) - Roman emperor in the years 81-96 CE
- Dǒng Zhòngshū (董仲舒; 179-104 BCE) - Chinese philosopher and writer
- Duānmù Cì (520-456 BCE) - Confucian disciple, also known by his courtesy name Zǐgòng (子貢)