Jean-Baptiste Rousseau was a French playwright and poet, particularly noted for his cynical epigrams.

Jean-Baptiste Sanson de Pongerville was a French a man of letters and poet. He was elected the tenth occupant of Académie française seat 31 in 1830.

Jean-Baptiste Say was a liberal French economist and businessman who argued in favor of competition, free trade and lifting restraints on business. He is best known for Say's law—also known as the law of markets—which he popularized. Scholars disagree on the surprisingly subtle question of whether it was Say who first stated what is now called Say's law. Moreover, he was one of the first economists to study entrepreneurship and conceptualized entrepreneurs as organizers and leaders of the economy.

Jean-Baptiste Vivien de Châteaubrun was a French dramatist and a member of the Académie française. He was born and died in Angoulême.

Jean-Baptiste Willermoz was a French Freemason and Martinist who played an important role in the establishment of various systems of Masonic high-degrees in his time in both France and Germany.

Jean-Baptiste-Antoine Suard was a French journalist, translator and man of letters during the Age of Enlightenment. He was born in Besançon and died in Paris.

Jean-Baptiste-Claude Delisle de Sales or Jean-Baptiste Isoard de Lisle was a French philosopher noted for his multi-edition, multi-volume opus The Philosophy of Nature: Treatise on Human Moral Nature.

Jean-Baptiste Henri de Trousset, lord of Valincour or Valincourt was a French admiral and man of letters. He was a friend of chancellor d'Aguesseau, Racine and Boileau.

Jean-Baptiste-Louis Gresset was a French poet and dramatist, best known for his poem Vert-Vert.

Jean-Baptiste-Pierre Jullien de Courcelles was a French historian and genealogist. He was born in Orléans and died at Saint-Brieuc, now in the Côtes d'Armor département of Brittany. He published several historical and genealogical works, and was a correspondent of the Société académique d'Orléans. He was chief administrator of the charitable Asile Royal de la Providence in Paris, president of the hospices of Orléans, and a knight of the Papal Order of the Golden Spur.