Māmercus, i, m. Mamers for Mars, an Oscan praenomen: Mamercus praenomen Oscum est, ab eo, quod hi Martem Mamertem appellant, Paul. ex Fest. p. 130 Mull.

— A Roman surname in the Aemilian gens, who claimed Numa as their ancestor: ridere Mamercorum alapas, Juv. 8, 192.

—Esp.: M. Aemilius Mamercus, Cic. Brut. 47, 175.