A male celebrant of a traditional 15th-birthday celebration is called a quinceañero.
The term is the masculine counterpart of quinceañera, formed from the Spanish quince años, meaning “fifteen years.” In many Spanish-speaking communities, quinceañero can identify a boy or young man marking his fifteenth birthday with a celebration modeled on a quinceañera.
The celebration is more commonly associated with girls, so quinceañero is encountered less often in English-language descriptions. Some families use the broader phrase fiesta de quince años for celebrations honoring either gender.
A quinceañero celebration may include formal clothing, a religious service, a court of honor, choreographed dances, and family rituals. Customs vary widely by country, religion, and family, so the term identifies the celebrant rather than prescribing one fixed ceremony.