Establishment of diplomatic relations: 17th century, Information provided by Portugal.
The Polish envoy Ksawery Orłowski) presented his credentials to the President of Portugal (António José de Almeida)- Establishment of diplomatic relations: 13/5/1922, Information provided by Poland.
The Portuguese ambassador (envoy) (Vasco de Quevedo) presented his credentials to the President of the Republic of Poland (Stanisław Wojciechowski): 5/7/1923, Information provided by Poland and Portugal.
A note from the Ministry of Foreign Affairs of the Polish People's Republic handed by the Undersecretary of State (Józef Czyrek) to the Minister of Foreign Affairs of Portugal (Mário Alberto Nobre Lopes Soares): 11/7/1947, Information provided by Poland.