As a coach, Hareide has won league titles in all of the Scandinavian countries,[3] In Sweden with Helsingborgs IF in 1999 and with Malmö FF in 2014, in Denmark with Brøndby in 2001–02 and in his native Norway with Rosenborg in 2003. Hareide was in charge of the Norway national team from 2003 to 2008. While at Malmö during his first time in charge at the club, he notably took the team to the modern-day UEFA Champions League group stages for the first two times in the club's history. He coached Denmark to a round of 16 finish at the 2018 FIFA World Cup before appointed coach of Iceland in 2023. Following his time with Iceland, he announced his retirement from coaching.
In the mid-1990s, Norwegian millionaires Kjell Inge Røkke and Bjørn Rune Gjelsten were reportedly interested in bringing Hareide back to Manchester City as manager if their bid to take over the club was successful, but the takeover bid failed and Hareide never returned to the club. When the pair tried to take over Leeds United around the same time, it was once again reported that Hareide would be installed as manager if the takeover bid succeeded, but this bid too failed and Hareide was never put in charge at Elland Road. However, the pair finally succeeded in a takeover bid for fellow English Premier League club Wimbledon in June 1997, and Hareide appeared all set to become the new manager of the club in a move that would have ousted the incumbent Joe Kinnear. But this never happened either.[6]
Norway
Hareide was employed as the coach of the Norway national football team at the end of 2003, replacing Nils Johan Semb, after one season as coach of Rosenborg BK. On 8 December 2008, after having failed to take Norway to any international tournaments, and having had a bad start to the 2010 FIFA World Cup qualifying campaign, Hareide resigned from his position as national team coach of Norway. On 9 December 2008 Hareide announced that he was stepping down as coach of the Norway national team.[7]
Viking
On 10 June 2009 it was announced that he wouldbe coaching Örgryte IS. On 1 December 2009 the former Norway national team head coach left the Swedish club to join Viking FK, from Stavanger to replace Uwe Rösler.[8] Following Egil Østenstad resignation as director of football in Viking, Viking announced in September 2011 that Hareide would be manager of Viking,[9] and that Josep Clotet Ruiz would be hired as coach from the 2012-season onwards,[10] similar to the organization English clubs and Molde have, with Ole Gunnar Solskjær as manager and Mark Dempsey as coach.[11] Viking finished 9th in 2010, Hareide's first season, and 11th in 2011.[12] With the team positioned on 10th place on 9 June 2012, Hareide was released by Viking FK because of the bad results.[13]
Second spell at Helsingborg
Following Conny Karlsson's resignation in Helsingborgs IF, the club hired Hareide, the last coach who won Allsvenskan with Helsingborgs IF, except Karlsson, as head coach until the end of the 2012 season.[14]
Malmö FF
Hareide was brought out of retirement from his managerial career by being appointed as the new manager of the reigning Swedish champions Malmö FF on 9 January 2014.[15] He had immediate success at the club as he led the team to defend their Allsvenskan title and qualify for the group stage of the 2014–15 UEFA Champions League in his first season.[16][17] For this successful season Hareide was awarded Allsvenskan manager of the year.[18] He was also nominated for coach of the year at Svenska idrottsgalan.[19]
Hareide was the Danish coach at the 2018 FIFA World Cup. He managed Denmark to 2nd place in their group before they were eliminated in the round of 16 in a penalty shootout against Croatia.
Hareide continued as manager of in the UEFA Euro 2020 qualifying. Under his leadership Denmark qualified for the UEFA Euro 2020. It was revealed that Kasper Hjulmand would replace him as manager of the Danish team following the tournament. However, due to the COVID-19 pandemic the tournament was postponed, and Hareide's contract expired. When he left he had not lost in ordinary time for the last 34 games, and his last defeat was on 11 October 2016 against Montenegro.[21]
Rosenborg
In August 2020, he became the head coach of Rosenborg BK for a second tenure.[22]
Malmö FF
In September 2022, Åge was announced as the new interim manager for Malmö FF.[23]
Iceland
On 14 April 2023, Åge was announced as the new manager of the Iceland national football team.[24] He resigned from his position on 25 November 2024.[25] A day later, he announced his retirement from coaching.[26]
^"Malmö FF är svenska mästare 2014" [Malmö FF are Swedish Champions 2014]. mff.se (in Swedish). Malmö FF. 5 October 2014. Archived from the original on 7 October 2014. Retrieved 19 January 2015.