Fabien Magnin (1810, Isère – 1884) was President of the Positivist Society.
Auguste Comte, the founder of positivism, appointed him to be President of the Positivist Society after his death.
Magnin filled this role from 1857 to 1880, when he resigned.
[1] Magnin also spread workers positivism (le positivisme ouvrier).
In 1863 he founded the Cercle des prolétaires positivistes which affiliated to the First International.