Quinceañero is a male counterpart to quinceañera for someone celebrating a fifteenth birthday.
The distinction follows Spanish grammatical gender: quinceañera is feminine, while quinceañero is masculine. Both words are related to quince, the Spanish word for fifteen.
In English-language usage, quinceañera is much more widely recognized and is often used for the celebration itself. Quinceañero can describe a boy or young man marking the same age milestone, although terminology and customs vary among families and communities.
There is no single worldwide format for a quinceañero celebration. Some families adapt elements commonly associated with quinceañeras, while others choose a different party, ceremony, or family tradition. The vocabulary should therefore not be treated as a universal rule about how the event must look.