The male form of quinceañera is quinceañero, a term for a boy celebrating his fifteenth birthday in a comparable tradition.
Spanish nouns and adjectives often change form according to gender. Quinceañera is feminine, while quinceañero is masculine. The underlying quince element still refers to the number fifteen, so both terms connect the celebration to that age.
Quinceañero is less internationally familiar than quinceañera because the feminine tradition is more widely documented and practiced. It should not be confused with chambelán, which usually identifies a male attendant or escort in a quinceañera court rather than the birthday honoree.