The Spanish masculine counterpart to quinceañera is quinceañero.
Quinceañera is the feminine form associated with a girl or young woman celebrating her fifteenth birthday. Quinceañero is the masculine form used for a boy or young man marking the same age milestone. Both words derive from quince años, meaning “fifteen years.”
English-language usage often discusses quinceañeras more frequently because the feminine celebration has become especially prominent in Latin American and Latino communities. However, quinceañero celebrations also exist and may include formal clothing, family rituals, a religious service, music, and a reception.
The tilde in quinceañero is important: it marks the ñ sound. The word should not be confused with quinceañera, which specifically identifies the feminine celebrant or, by extension, her celebration.