A boy celebrating the comparable traditional fifteenth-birthday rite of passage is called a quinceañero.
The noun quinceañero is the masculine counterpart of quinceañera. Both words derive from quince, the Spanish word for fifteen, and refer to the young person associated with the celebration rather than simply to the party itself.
Quinceañera traditions are much more widely associated with girls, especially in Mexico, other parts of Latin America, and Latino communities in the United States. However, some families hold equivalent celebrations for boys, and the terminology can be adapted to local customs.
Quinceañero should not be confused with chambelán. A chambelán is traditionally a male attendant or escort in a quinceañera’s court, whereas quinceañero identifies the birthday honoree. Usage can vary, but the distinction is the standard one in descriptions of the custom.