Marcelino is the Spanish and Portuguese form of the Latin Marcellinus, a diminutive of Marcellus and ultimately of Marcus, so it is usually read as "little Marcus" or "dedicated to Mars". The 1955 Spanish film Marcelino pan y vino made it well loved across the Spanish-speaking world. In the United States the name moves in a narrow band: number 1305 in 2000, number 1167 in 2001 at its best and number 1649 in 2025, with 102 boys.