Marcellus \mar-cellus, marce(l)-lus\ as a boy's name is pronounced mar-SEL-us. It is of Latin origin. A diminutive form of Marcus. The name of numerous saints.

Marcellus has 1 variant form: Marcello.

For more information, see also related names Marcel, Mark and Marlon.

Baby names that sound like Marcellus are Marcell and Marcellin.