Karl Franz Friedrich Chrysander was a German music historian, critic and publisher, whose edition of the works of George Frideric Handel and authoritative writings on many other composers established him as a pioneer of 19th-century musicology.

Friedrich Heinrich Karl de la Motte, Baron Fouqué ; was a German writer of the Romantic style.

Friedrich Dedekind was a German humanist, theologian, and bookseller.

Friedrich Delitzsch was a German Assyriologist. He was the son of Lutheran theologian Franz Delitzsch (1813–1890).

Friedrich Dessauer was a German physicist, a philosopher, a socially engaged entrepreneur and a journalist.

Friedrich Heinrich Dieterici was a German orientalist and historian.

Friedrich Dürrenmatt was a Swiss author and dramatist. He was a proponent of epic theatre whose plays reflected the recent experiences of World War II. The politically active author's work included avant-garde dramas, philosophical crime novels, and macabre satire. Dürrenmatt was a member of the Gruppe Olten, a group of left-wing Swiss writers who convened regularly at a restaurant in the city of Olten.

Hartwig Karl Friedrich Eggers was a German art historian. He was a member of the literary groups Tunnel über der Spree and Rütli.

Friedrich Engels was a German philosopher, historian, political theorist, critic of political economy, and revolutionary socialist. He was also a businessman, journalist, and Karl Marx's closest friend and collaborator.

Friedrich Heinrich Feuerbach was a German philologist and philosopher. In the 1840s, he played an important role disseminating materialist and atheist philosophy.