Johann Georg Baiter was a Swiss philologist and textual critic.

Johann Georg Hamann was a German Lutheran philosopher from Königsberg known as "the Wizard of the North" who was one of the leader figures of post-Kantian philosophy. His work was used by his student J. G. Herder as the main support of the Sturm und Drang movement, and is associated with the Counter-Enlightenment and Romanticism.

Johann Georg Heinrich Feder was a German philosopher.

Johann Georg Jacobi (September 2, 1740 – January 4, 1814) was a German poet.

Johann Georg Kohl was a German travel writer, historian, and geographer.

Johann Georg Meusel was a German bibliographer, lexicographer and historian.

Johann Georg Ritter von Zimmermann / Johann Georg Zimmermann was a Swiss philosophical writer, naturalist, and physician. He was the private physician of George III and later Frederick the Great.

Johann Georg Schlosser was a German lawyer, historian, politician, translator and philosopher. He is most known for having married Cornelia Schlosser, née Goethe, the sister of famous German playwright Johann Wolfgang von Goethe.

Johann Georg Schwarz was a philosophy professor at Moscow University who headed the Russian branch of the Rosicrucian Society.

Johann Georg Sulzer was a Swiss professor of Mathematics, who later on moved on to the field of electricity. He was a Wolffian philosopher and director of the philosophical section of the Berlin Academy of Sciences, and translator of David Hume's An Enquiry Concerning the Principles of Morals into German in 1755.