Quinceañero is the Spanish word commonly used for a boy or young man celebrating a comparable fifteenth-birthday milestone.
It is the masculine counterpart to quinceañera. The word can identify the honoree, while quinceañera may identify both the female honoree and, in common English usage, the celebration itself. The underlying custom is not identical everywhere: some families organize a quinceañera-style event for a boy, some use a different name, and others do not mark the birthday with a formal ceremony.
Quinceañero should not be confused with chambelán. A chambelán is traditionally a male escort or court member at a quinceañera, whereas the quinceañero is the person being honored. Spanish-speaking communities vary in vocabulary, and local usage may favor terms such as fiesta de quince años for the celebration.