[1] In the years before World War I, Uruguay received working-class migrants from Poland.

Soon afterwards, Polish envoy Count Ksawery Franciszek Orłowski presented his credentials to the Uruguayan President Baltasar Brum.

[3] Between 1922 and 1936 the Polish diplomatic legation in Buenos Aires was accredited for relations with Uruguay.

[4] During World War II, César Montero Bustamante was put in-charge of on behalf of the Ministry of Foreign Affairs of Uruguay for relations with the Polish government-in-exile in London.

[6] In 2002, Uruguayan Foreign Minister Didier Opertti paid an official visit to Poland and met with Polish President Aleksander Kwaśniewski.