Brazil is the Portuguese-speaking country especially associated with the festa de quinze anos tradition.
Festa de quinze anos is the Brazilian Portuguese expression for a fifteenth-birthday celebration. It is the Portuguese-language counterpart most often compared with the Spanish-American quinceañera, although Brazilian customs have their own history, vocabulary, music, and regional variations.
Brazil’s connection is also clear from language: Portuguese is the country’s official language, while Spanish is used across most of Spanish-speaking Latin America. The phrase festa de quinze anos therefore describes the occasion without borrowing the Spanish word quinceañera.
Portugal and several African countries also speak Portuguese, but Brazil is the country most strongly identified with this particular large-scale fifteenth-birthday tradition. The celebration is not compulsory, and many Brazilian families mark turning fifteen in simpler ways or do not hold a formal event.