Marcus Manlius Capitolinus was consul of the Roman Republic in 392 BC. He was a brother of Aulus Manlius Capitolinus, consular tribune five times between 389 and 370 BC. The Manlii were one of the leading patrician gentes that dominated the politics of the early Republic.

The Roman Republic was the era of classical Roman civilization beginning with the overthrow of the Roman Kingdom and ending in 27 BC with the establishment of the Roman Empire. During this period, Rome's control expanded from the city's immediate surroundings to hegemony over the entire Mediterranean world.