Jean-Charles Gille-Maisani (22 May 1924 – 29 January 1995) was a French, later Canadian, engineer, psychiatrist and professor of medicine.
Gille was born in Trier (Germany), where his father, originally from Lorraine, was a superior officer in the French garrison.
He learned German early in life and moved on to learn French, English, Italian, Spanish, Russian and Polish, as well as Latin and Ancient Greek.
He entered the École Polytechnique in 1943.