Quinceañero is a Spanish name commonly used for a boy’s male coming-of-age celebration corresponding to a quinceañera.
The word can refer to the boy being honored or, depending on regional usage, to the celebration itself. The masculine form reflects the Spanish grammatical distinction between quinceañera and quinceañero.
The better-known quinceañera tradition is associated with girls and the fifteenth birthday, but families and communities have adapted the idea for boys. Customs can include formal clothing, a religious service, a reception, family speeches, and dances.
Usage is not perfectly uniform across Spanish-speaking regions. Some people use quinceañera as a broad label for the celebration regardless of gender, while others use quinceañero specifically for a boy. Regional family practice determines the details.