The Spanish masculine term corresponding to quinceañera is quinceañero.
Quinceañera is the feminine form used for both the celebration and, commonly, the girl being honored. Spanish nouns and adjectives often change endings to reflect grammatical gender, so quinceañero is the masculine counterpart.
The masculine term is less familiar internationally because quinceañera celebrations have historically focused more often on girls reaching a symbolic stage of adolescence. In some communities, boys’ celebrations are also held and may be called quinceañero celebrations, although customs and names vary by region.
The word should not be confused with quince años, the Spanish phrase meaning “fifteen years,” or with quinceañista, which is not the standard term for the celebrant. Spelling also matters: the ñ distinguishes quinceañero from forms written with an n.