The traditional male term for a boy celebrated at a quinceañera-style 15th birthday is quinceañero.
Quinceañera is the best-known name for the celebration and for the girl being honored. Spanish-language usage also has the masculine form quinceañero for a boy reaching the same milestone. The word is formed from quince, meaning fifteen, with a suffix associated with a person connected to the occasion.
The masculine term is less familiar internationally because the celebration developed most visibly as a ceremony for girls. Boys’ versions exist in some families and communities, but they are not governed by one universal program. Their traditions can include formal clothing, a court, a religious service, a reception, or a choreographed dance.
Quinceañero should not be confused with quince años, which means “fifteen years” and describes the age or birthday milestone. It also should not be confused with quinceañera, the feminine form traditionally used for the girl or the celebration itself.