The traditional Spanish name for a boy celebrating his fifteenth birthday is quinceañero.
Quinceañero is the masculine counterpart to quinceañera. Both terms derive from the Spanish quince años, or “fifteen years,” and identify a young person connected with a fifteenth-birthday celebration.
In many communities, quinceañera traditions developed around girls, so the feminine term is much more widely recognized internationally. Some families and communities have adapted the celebration for boys, sometimes using quinceañero or describing the event more generally as a quince años celebration.
Usage is not perfectly uniform across Spanish-speaking countries. A family may choose a local term or an English description, and the format may be formal, religious, secular, or entirely contemporary. The masculine term nevertheless provides the standard gendered counterpart in Spanish.