Historic figures: D
- Vasco da Gama (c.1460 - 1524) - Portuguese explorer, navigator, 16th century
- Leonardo da Vinci (1452 -1519) - Italian Renaissance artist, inventor
- Charles Darwin (1809 - 1882) - Victorian naturalist, formulated theory of evolution
- David I (c.1080 - 1153) - medieval king of Scotland, reformer
- St David (?-589) - patron saint of Wales
- Emily Davison (1872 - 1913) - 20th century militant suffragette
- Sir Humphry Davy (1778 - 1829) - 19th century scientist, inventor of the Davy lamp
- Ferdinand de Lesseps (1805 - 1894) - 19th century administrator, built the Suez Canal
- Catherine de Medici (1519 – 1589) - Italian-born French queen and regent
- Eamon de Valera (1882 - 1975) - 20th century Irish nationalist, president of Eire
- Charles Dickens (1812 - 1870) - Victorian author
- Benjamin Disraeli(1804 - 1881) - Victorian Conservative prime minister
- Djoser (reigned c. 2630 - c. 2611 BC) - Egyptian pharaoh, initiated the building of pyramids
- Admiral Karl Dönitz (1891 - 1980) - German U-boat commander, successor to Adolf Hitler
- Sir Francis Drake (c.1540 - c.1596) - Elizabethan mariner, explorer
- Cornelius Drebbel (1572 - 1633) - Dutch Renaissance inventor of the submarine