The Spanish masculine counterpart of “quinceañera” for a male celebrant is quinceañero.
Quinceañera is the feminine form associated with a girl celebrating her fifteenth birthday, while quinceañero is the masculine form used for a boy or young man marking the same age milestone. Both words connect to quince años, “fifteen years.”
The traditional celebration is more strongly associated with girls, especially because of customs involving a formal gown, a court, a shoe change, and a father-daughter dance. Nevertheless, families and communities have created quinceañero celebrations and gender-inclusive versions that adapt or replace those elements.
Usage can vary by country and by speaker. Some people use quinceañero for the male celebrant, while others describe the event with quince años or another local expression. The important distinction in this question is grammatical gender: quinceañero is not the name of a dance, venue, or gift.