Fredrik Meltzer designs the modern flag of Norway to replace the modified Danish and Swedish flags then in use.
2 May - Jens Andreas Friis, linguist and author (d.1896)
14 July - Jens Holmboe, politician and Minister (d.1891)
17 August - Jacob Andreas Michelsen, businessperson and politician (d.1902)
23 August - Christian Collett Kjerschow, politician (d.1889)
18 November - Johan Jørgen Lange Hanssen, politician (d.1889)
Eilev Jonsson Steintjønndalen, Hardanger fiddle maker (d.1876)
14 January - Jens Zetlitz, priest and poet (b.1761)
5 March - Gabriel Schanche Kielland, businessman and ship owner (b.1760)
20 May – Abraham Pihl, clergyman, astronomer and architect (b.1756).
21 November - Jonas Rein, priest, poet and member of the Norwegian Constituent Assembly at Eidsvoll (b.1760)
1821 in Norway Wikipedia
Events in the year 1821 in Norway.