[3] Coming through the youth system, Haaland played for Norwegian sides Bryne and Molde, before relocating to Austria with Red Bull Salzburg in January 2019.

[14] He debuted for Bryne 2 on 5 October 2015 in the Group 6 of the 2015 fourth division against Start reserves (0–1) [15] and five days later he scored his first goal on senior level against Hei in a 2–1 defeat away to Heistad.

[16] The following season he appeared more often in the Bryne 2 squad and he scored his first career hat-trick[17] on 19 September 2016, aged 16 and 2 months, in an away 5–3 win over Vard Haugesund 2 in the Group 6 of the Norwegian fourth tier.

Although he failed to score in his breakthrough season at Bryne, Haaland was offered a trial by German club TSG Hoffenheim before eventually moving to Molde to play under Ole Gunnar Solskjær.

[32] On 19 August 2018, Austrian Bundesliga champions Red Bull Salzburg announced that Haaland would join the club on 1 January 2019, signing a five-year contract.

[39] In his next two matches of the Champions League season, Haaland recorded a goal against Liverpool at Anfield and a further two against Napoli, becoming only the second teenager after Karim Benzema in the history of the competition to score in each of his first three appearances.

[40] After converting a penalty in Salzburg's reverse fixture against Napoli, Haaland became the first teenager to score in his first four matches in the competition, and only the fourth player of any age to achieve this feat, following Zé Carlos, Alessandro Del Piero and Diego Costa.

[70] In Dortmund's reverse league fixture against Bayern at the Allianz Arena on 6 March, Haaland scored twice within the opening 10 minutes to give his team a 2–0 lead.

[74] After missing two matches due to deep bruising,[75] Haaland returned to Dortmund's starting line-up on 13 May for the 2021 DFB-Pokal final; he scored a brace in his team's 4–1 win over Leipzig, securing his first title with the club.

[39] In City's second group stage match a week later against his former club Borussia Dortmund, Haaland scored an acrobatic effort late in the contest to secure his side a 2–1 comeback victory.

[98][99] On 2 October, Haaland became the first player in Premier League history to score a hat-trick in three successive home games during City's 6–3 derby win against Manchester United, additionally earning two assists.

[104] During Manchester City's FA Cup quarter-final against Burnley four days later, Haaland scored his sixth hat-trick of the season, passing the 40-goal mark across all competitions.

[107] Haaland registered two assists and a goal in his side's 4–1 home victory against league leaders Arsenal on 26 April, closing the gap between them and City in the table to just two points while the latter still had two games in hand.

[111] He won by a record margin, earning 82% of the vote ahead of Arsenal's Bukayo Saka and Martin Ødegaard and becoming only the fourth player to claim the award in their debut season.

Despite Haaland struggling to have a large impact on the match,[120] City would win 1–0 to earn a maiden Champions League title and achieve only the second-ever continental treble by an English side.

[121] With 12 goals, Haaland finished as the top scorer of the Champions League season for a second time,[122] joining Lionel Messi as the only players to accomplish this feat twice before turning 23.

[123] Haaland would be subsequently named the UEFA Men's Player of the Year in August, ahead of Messi and Manchester City teammate Kevin De Bruyne.

[124][125] Manchester City began their 2023–24 Premier League season on 11 August 2023, with Haaland scoring a brace in a 3–0 away win against newly promoted team Burnley.

[133] The following day, he was presented with the Gerd Müller Trophy at the 2023 Ballon d'Or awards ceremony, given to the player with the most goals scored for club and country across a single season.

[134] On 25 November, Haaland became the fastest player to score 50 Premier League goals in a 1–1 draw with Liverpool; with just 48 appearances, he comfortably beat the previous record of 65 matches by Andy Cole.

[135] After suffering a bone stress injury in his foot in early December, Haaland would miss nearly two months of action, including City's success at the 2023 FIFA Club World Cup, and would not return to the pitch until the end of January 2024.

[140] Haaland scored both goals in City's 2–0 vital win away to Tottenham Hotspur on 14 May, bringing his side back to the top of the Premier League table with one match remaining.

[150] On 22 September, Haaland matched Cristiano Ronaldo's record of reaching 100 goals across all competitions for one club in 105 appearances in Europe's top five leagues, when he scored the opener in a 2–2 draw against Arsenal.

On 27 March 2018, while with the Norway under-19 side,[156] Haaland scored a hat-trick against Scotland in a 5–4 victory, helping his country secure qualification to the 2018 UEFA European Under-19 Championship.

Haaland also set a new U-20 World Cup record for most goals scored by a single player in a match, with the result additionally being the biggest win by any team in the history of the tournament.

[163] On 28 August 2019, Haaland was named by manager Lars Lagerbäck to the Norway senior team squad to face Malta and Sweden in UEFA Euro 2020 qualifying matches, debuting on 5 September 2019 against the former opponent.

[167] During the September 2021 international break, Haaland scored five goals in three World Cup qualification matches, including a second hat-trick for Norway in a 5–1 victory against Gibraltar.

[169] Haaland's brace in a Euro 2024 qualifier against Cyprus on 12 October 2023 brought his international tally to 27 goals in 27 appearances, surpassing Einar Gundersen as Norway's second-highest all-time top scorer.

[171] On 10 October 2024, Haaland scored a brace in a 3–0 Nations League win over Slovenia, reaching 34 international goals to become Norway's all-time top scorer at the age of just 24, and overtaking Juve's record that had stood since 1937.

[182][183][184] After his record breaking first season in England, Gary Neville proclaimed that Haaland is "truly unique" and that he has the skill and strength of Wayne Rooney and the talent and finishing of Harry Kane and Ronaldo Nazário.