In a traditional quinceañera, what Spanish name is given to the thanksgiving Mass held during the celebration?

A traditional quinceañera thanksgiving Mass is called a Misa de Acción de Gracias.

The phrase means “Mass of thanksgiving” in Spanish. In communities where the religious element remains central, the celebrant and family attend a Catholic service before or as part of the wider birthday observance. The service gives the family an opportunity to express gratitude for the celebrant’s life and to ask for blessings for the future.

A quinceañera is not itself a sacrament, and the Mass is not mandatory for every modern celebration. Some families hold a large reception without a church service, while others choose a blessing or another religious ceremony. The Mass should therefore not be confused with confirmation, baptism, or a wedding ceremony.

The reception may include formal court presentations, a father-daughter dance, symbolic gifts, and a meal. Customs vary considerably by country, denomination, and family.