Carlos Muzzio (born 21 August 1984) is an Argentine rugby union player, currently playing for Rugby Pro D2 side Mont-de-Marsan. His preferred position is prop.
Muzzio represented both and Tarbes before joining in 2014. At the age of 36, he was named in the Argentina squad for the 2021 Rugby Championship. He made his debut for Argentina in Round 1 of the Rugby Championship against South Africa.