Hákon Arnar is a youth academy graduate of Icelandic club ÍA. He made his senior debut for the club on 26 February 2019 in a 6–0 league cup win against Stjarnan.
In June 2019, Hákon Arnar joined youth academy of Danish club Copenhagen.2 On 21 May 2021, club announced that he have signed a new contract with the club until June 2026.3 He made his senior debut for the club on 29 July 2021 in a 5–0 UEFA Europa Conference League qualifying round win against Torpedo-BelAZ Zhodino.4
On 17 July 2023, Hákon Arnar signed for French Ligue 1 club Lille, on a five-year contract running until 30 June 2028.5 The financial details of the transfer include an initial and base fee of €12 million and a maximum of €5 million add-ons depending on sporting conditions.6
Hákon Arnar is an Icelandic youth international.7 On 2 September 2021, he scored twice in his team's 2–1 victory against Belarus in 2023 UEFA European Under-21 Championship qualification stage.8 He made his Iceland senior team debut on 2 June 2022 in a 2–2 draw against Israel.9
Hákon Arnar was born into a family of footballers. His parents Haraldur Ingólfsson and Jónína Víglundsdóttir are former national team players.10 His brothers Tryggvi Hrafn and Haukur Andri are also professional footballers.11
Copenhagen
International
Individual
Hákon Arnar Haraldsson at Soccerway https://int.soccerway.com/players/-/601446/ ↩
"Hákon Arnar Haraldsson Joins Talent Department". F.C. Copenhagen. 27 June 2019. Retrieved 14 September 2021. https://www.fck.dk/en/news/hakon-arnar-haraldsson-joins-talent-department ↩
"F.C. København Forlænger Med Hákon Arnar Haraldsson". F.C. Copenhagen (in Danish). 21 May 2021. Retrieved 14 September 2021. https://www.fck.dk/nyhed/fc-koebenhavn-forlaenger-med-hakon-arnar-haraldsson ↩
"Torpedo Zhodino–Copenhagen". UEFA Conference League. UEFA. Retrieved 14 September 2021. https://www.uefa.com/uefaconferenceleague/match/2032906--torpedo-zhodino-vs-copenhagen/lineups/ ↩
"L'international islandais, Hákon Haraldsson, nouveau renfort offensif". LOSC (in French). 17 July 2023. Retrieved 17 July 2023. https://www.losc.fr/actualites/2023-07-17/linternational-islandais-hakon-haraldsson-nouveau-renfort-offensif ↩
Marcant, Raphaël (18 July 2023). "LOSC – FC Copenhague : Un bras de fer a été gagné pour Hákon Arnar Haraldsson". Le Petit Lillois (in French). Retrieved 18 July 2023. https://lepetitlillois.com/2023/07/18/losc-fc-copenhague-un-bras-de-fer-a-ete-gagne-pour-hakon-arnar-haraldsson ↩
"U21 karla - Hópurinn fyrir leiki í september". 25 August 2021. Retrieved 14 September 2021. https://www.ksi.is/um-ksi/frettir/frettasafn/frett/2021/08/25/U21-karla-Hopurinn-fyrir-leiki-i-september/ ↩
"Sigur í fyrsta leik hjá U21 árs liðinu". Morgunblaðið (in Icelandic). 2 September 2021. Retrieved 14 September 2021. https://www.mbl.is/sport/efstadeild/2021/09/02/sigur_i_fyrsta_leik_hja_u21_ars_lidinu/ ↩
"Tek þetta alfarið á mig". Morgunblaðið (in Icelandic). 2 June 2022. Retrieved 3 June 2022. https://www.mbl.is/sport/efstadeild/2022/06/02/tek_thetta_alfarid_a_mig/ ↩
"Í leikmannahóp stórveldisins í fyrsta sinn". Morgunblaðið (in Icelandic). 4 May 2021. Retrieved 14 September 2021. https://www.mbl.is/sport/fotbolti/2021/05/04/i_leikmannahop_storveldisins_i_fyrsta_sinn/ ↩
"Fetar í fótspor foreldranna". Morgunblaðið (in Icelandic). 11 January 2018. Retrieved 14 September 2021. https://www.mbl.is/sport/efstadeild/2018/01/11/fetar_i_fotspor_foreldranna/ ↩
Includes Icelandic Cup, Danish Cup, Coupe de France /wiki/Icelandic_Men%27s_Football_Cup ↩
Includes Icelandic League Cup /wiki/Icelandic_Men%27s_Football_League_Cup ↩
Appearances in UEFA Europa Conference League /wiki/UEFA_Europa_Conference_League ↩
Appearances in UEFA Champions League /wiki/UEFA_Champions_League ↩
"FC Copenhagen win 14th Danish league title". F.C. Copenhagen. 24 May 2022. Retrieved 26 May 2022. https://dailytimes.com.pk/939970/fc-copenhagen-win-14th-danish-league-title/ ↩
"Inside Danish Sport: Titletown Copenhagen". 30 May 2023. Retrieved 17 July 2023. https://cphpost.dk/2023-05-30/news/inside-danish-sport-titletown-copenhagen/ ↩
"FCK win 2022/23 Danish Cup". F.C. Copenhagen. 18 May 2023. Retrieved 18 May 2023. https://www.fck.dk/en/news/fck-win-202223-danish-cup ↩
Jónsson, Óskar Ófeigur (19 December 2022). "Glódís Perla og Hákon Arnar eru Knattspyrnufólk ársins 2022". Vísir.is (in Icelandic). Retrieved 19 December 2022. https://www.visir.is/g/20222354388d/glo-dis-perla-og-hakon-arnar-eru-knatt-spyrnu-folk-arsins-2022 ↩