PolitikHukum & traktatBudayaAntariksa
- 1918Kemerdekaan11 November 1918 (republic proclaimed); notable earlier dates: 14 April 966 (adoption of Christianity, traditional founding date), 1 July 1569 (Polish-Lithuanian Commonwealth created)CIA World Factbook
- 1950Meratifikasi Konvensi GenosidaUN Treaty Collection
- 1977Meratifikasi ICCPR (hak sipil & politik)UN Treaty Collection
- 1978Situs Warisan Dunia UNESCO pertamaHistoric Centre of KrakówUNESCO World Heritage
- 1980Meratifikasi CEDAW (hak perempuan)UN Treaty Collection
- 1991Meratifikasi Konvensi Hak AnakUN Treaty Collection
- 2001Bergabung dengan ICC (Statuta Roma)UN Treaty Collection
- 2012Objek antariksa pertama yang diluncurkanPW-Sat 1GCAT
- 2016Meratifikasi Perjanjian Iklim ParisUN Treaty Collection
- 2019Penetapan Warisan Dunia terakhirKrzemionki Prehistoric Striped Flint Mining RegionUNESCO World Heritage
- 2023Pemilu legislatif terakhir2023-10-15IPU Parline
- 2026Peluncuran antariksa terakhirGCAT
