1606 - Dutch settlers start to use this area as a harbour which they call Harbour of Tortoises, after their initial 1598 settlement at Port de Warwick in Ferney, Vieux Grand Port.[1]
1721 - French in power on Isle de France; Noord-Wester Haven (harbor) renamed "Port Louis."[2]
1791 - Foundation of Collège National or Collège Colonial in Port Louis. This would later become Lycée Colonial and eventually the island's first Royal College.[7]
1897 - 22 June: Statue of British queen Victoria unveiled.[17]
1899 - Due to a plague epidemic the original Royal College Port Louis is permanently closed down as people flee Port Louis to settle in the cooler highlands of Curepipe.[7]
1943 - Mass gathering of Basdeo Bissoondoyal's Jan Andolan at Marie Reine de la Paix on 12 December, a precursor to the proclamation of the new 1947 Constitution to grant voting rights to the mass.[21]
1945
3 tropical cyclones strike (on 16 January, 2 February and 6 April), causing deaths and destroying homes and infrastructure. International relief arrives in Port Louis.[22]
End of World War II is celebrated at Champ de Mars, Town Hall, Luna Park, Majestic, Citadel, Signal Mountain, and streets of Port Louis.
October: 3 political activists are gunned down at night on Gorah Issac Road prior to municipal elections.[35]
1999
February: Riots break out at Roche Bois, a suburb of Port Louis, following the death in police custody of singer Kaya and ethnic riots spread across the island.[36]
May: L'Amicale riots erupt in the centre of Port Louis following a soccer match, resulting in 7 deaths, looting and property damage.[37]
2019 - October: First train connecting Port Louis to Rose Hill was launched from Richelieu (Phase 1 of Metro Express Project)[41]
2020 - August 29: Around 75,000 citizens march with activist Bruneau Laurette in the centre of Port Louis to protest against the government's poor handling of the MV Wakashio oil spill[42]
^Ceranka, Paweł; Szczepanik, Krzysztof (2020). Urzędy konsularne Rzeczypospolitej Polskiej 1918–1945. Informator archiwalny (in Polish). Warszawa: Naczelna Dyrekcja Archiwów Państwowych, Ministerstwo Spraw Zagranicznych. p. 322. ISBN978-83-65681-93-5.