PolitikHukum & traktatBudayaAntariksa
- 1640Kemerdekaan1143 (Kingdom of Portugal recognized); 1 December 1640 (independence reestablished after 60 years of Spanish rule); 5 October 1910 (republic proclaimed)CIA World Factbook
- 1978Meratifikasi ICCPR (hak sipil & politik)UN Treaty Collection
- 1980Meratifikasi CEDAW (hak perempuan)UN Treaty Collection
- 1983Situs Warisan Dunia UNESCO pertamaCentral Zone of the Town of Angra do Heroismo in the AzoresUNESCO World Heritage
- 1990Meratifikasi Konvensi Hak AnakUN Treaty Collection
- 1999Meratifikasi Konvensi GenosidaUN Treaty Collection
- 2002Bergabung dengan ICC (Statuta Roma)UN Treaty Collection
- 2016Meratifikasi Perjanjian Iklim ParisUN Treaty Collection
- 2019Penetapan Warisan Dunia terakhirSanctuary of Bom Jesus do Monte in BragaUNESCO World Heritage
- 2025Pemilu legislatif terakhir2025-05-18IPU Parline
