Joona Jasper Pääkkönen (Finnish pronunciation: ; born 15 July 1980) is a Finnish film actor.

Following a two-decade-plus career in Finnish movies, Pääkkönen's international breakthrough role came in 2015 in the historical drama television series Vikings (2016–2018; 2020) as Halfdan the Black. His next roles were in Spike Lee's comedy-drama film BlacKkKlansman (2018) and in the war drama film Da 5 Bloods (2020).

Early life
Pääkkönen was born in Helsinki, the son of actor Seppo Pääkkönen and Virve Havelin. His uncle Antti Pääkkönen is also an actor, and is a prolific voice actor. Already as a child, Pääkkönen was a theater assistant and attended Kallio Upper Secondary School of Performing Arts in Kallio, Helsinki. When Pääkkönen was 17, he spent a year in Maryland as an exchange student at Baltimore's Owings Mills High School during the 1997–98 school year.