What Spanish term is commonly used for the boys in a quinceañera’s court?

The boys in a quinceañera’s court are commonly called chambelanes.

A quinceañera’s court traditionally includes the celebrant and a group of attendants. Female attendants are often called damas, while male attendants are called chambelanes. The group may participate in a formal entrance, posed photographs, and choreographed dances during the reception.

The word is especially associated with the Mexican and Mexican-American vocabulary of quinceañera celebrations, although terminology varies by country and family. Some celebrations use alternative names, include only friends of one gender, or dispense with a court altogether.

Chambelanes are not the same as padrinos. Padrinos are sponsors or benefactors who may help provide particular parts of the event, such as the dress, cake, or music. A chambelán is primarily an attendant or dance partner in the court, so the roles can overlap socially but are not identical.