Quinceañero is the masculine Spanish term corresponding to quinceañera.
The word can identify a boy celebrating his fifteenth birthday or, depending on usage, the celebration itself. It uses the same quince, meaning fifteen, with a masculine ending. The feminine form quinceañera is far more widely recognized because the traditional celebration has historically focused on girls.
A quinceañero celebration may borrow familiar elements such as a religious service, formal clothing, a reception, dancing, family speeches, and symbolic gifts. It does not have to copy a traditional quinceañera exactly. Families and communities decide which customs fit the honoree.
The term is not a universal legal or religious category. It is a cultural word whose use differs across Spanish-speaking countries and Latino communities. The ñ is part of the standard spelling, and the masculine ending distinguishes quinceañero from the feminine quinceañera.