What is the formal Catholic church service often held for a quinceañera called?

The formal Catholic church service often held for a quinceañera is called a misa de acción de gracias.

The Spanish phrase means “Mass of thanksgiving.” Families may attend this service before the reception to give thanks for the celebrant’s life and to ask for guidance as she enters a new stage. In English-language discussions, it is also described as a quinceañera Mass or thanksgiving Mass.

This service is associated particularly with Catholic families, but it is not required for every quinceañera. Some families hold only a party, while others choose a different religious service or no religious ceremony. The reception and church observance are therefore related but distinct parts of the tradition.

The term should not be confused with a wedding Mass. A quinceañera service does not marry the celebrant or create a legal status.