Azmoun made his debut for the Iran national team in 2014 aged 19. He has been a regular withTeam Melli, playing in the2015,2019 and2023 editions of theAFC Asian Cup, as well as the2018 and2022 editions of theFIFA World Cup.
According to Sardar, he was first introduced to the sport when he started to kick some balls on a family trip inTurkmenistan[3][4][5][6] when he was 9.[7] He began his career at Oghab Gonbad ofGonbad-e Kavus.[8] He also playedvolleyball and was invited toIran's national under-15 volleyball team.[7] After some years, he joined Shamoushak Gorgan, before joiningEtka Gorgan, who were playing in Division 1 (the second tier) in Iran at the time.[9]
At age 15, Azmoun joinedSepahan's youth ranks.[8] While he appeared for the club during their pre-season friendlies abroad in Turkey, he did not make a professional appearance for the club as Sepahan won the2011–12 Iran Pro League and lifted the trophy.[7]
During the2012–13 season, thanks to Azmoun's great display in Iran's youth team, Sardar became sought after by a couple of European clubs, namelyRubin Kazan.[10] Azmoun became Iran's youngest Legionnaire when later that year he transferred to Rubin Kazan at the age of 17.[8]
In January 2013, Azmoun received an offer from Russian teamRubin Kazan to join them; meanwhile he had interest from two Iranian teams,Persepolis andEsteghlal, as well as an offer for first team contract inSepahan. He chose to work with Turkmen speakingKurban Berdyev and became Iran's first football player in theRussian Premier League.[8][11] In his first season at the club, he made eight appearances for his club's reserve team, scoring two goals and receiving one yellow card. He was also picked for the 18-man match day squad on a number of occasions, but failed to make his senior debut.
On 25 July 2013, Azmoun made his debut for the senior team in aUEFA Europa League match againstJagodina, coming on as a 73rd-minute substitute as Rubin won 1–0.[12] On 29 August, he scored his first goal in just his second senior appearance for Rubin in a 3–0Europa League win againstMolde, coming on as a substitute in the 64th minute.[13] He made his league debut with a goal and an assist on 6 October 2013, coming on as a substitute in the 72nd minute in a 5–1 win overAnzhi Makhachkala.
Three days later, he scored his second league goal for Rubin Kazan in a 2–1 defeat toRostov.[17] On 6 April, he scored a goal in Rubin Kazan's defeat toZenit St. Petersburg.[18] In a match againstKrylia Sovetov on 10 May, Azmoun came on as a substitute in the 55th minute, scoring a goal and providing an assist in a 4–0 win.[19][20]
On 4 July 2014, Rubin Kazan announced through their official website that Azmoun would remain at the club despite transfer offers from Arsenal, Liverpool and Zenit St. Petersburg. He scored Rubin Kazan's goal in a 1–1 draw againstHellas Verona in a pre-season friendly match on 27 July 2014. He scored his first goal of the season in a 1–1 draw againstTerek Grozny in the 87th minute. On 30 October, he scored a goal in their victory overSpartak Moscow in the2014–15 Russian Cup.[21]
On 26 February 2015, Azmoun signed a three-and-a-half-month loan deal with relegation-battling Russian Premier League club FC Rostov until the end of the season.[22][23][24] On 16 March, Azmoun came on as a substitute in the 73rd minute and scored the match winner in the 88th minute againstKuban Krasnodar.[25] Azmoun again found the back of the net on 26 April 2015 in Rostov's 2–2 draw againstDynamo Moscow. His good performance earned him a place on the Russian Premier League Team of the Week.[26] He scored Rostov's winning goal in therelegation play-offs on 7 June.
At the end of the 2014–15 season, Azmoun extended his loan deal with Rostov until the end of the 2015–16 season.[27][28] He scored his first goal of the season on 22 August 2015 in a 2–1 loss toCSKA Moscow. After his good performances in the first half of the season, he was linked with English Premier League clubStoke City.[29] Later in March 2016 he was also linked with a move to English sideEverton.[30][31][32]
After a long goalless drought, Azmoun scored in Rostov's 3–0 win against Zenit Saint Petersburg on 24 April 2016. He scored a brace in a 3–1 victory over Dynamo Moscow on 12 May 2016, which kept Rostov in second place and in contention for the Russian Premier League championship. On 16 May 2016 with his goal, Rostov defeatedUral Sverdlovskaya Oblast 1–0 and clinched at least anUEFA Champions League play–off spot for the 2016–17 season. His goal against Ural was his fifth consecutive game with a goal which included six goals in five games.
On the last day of the Russian Premier League on 21 May 2016 needing a win and CSKA Moscow to drop points to become champions, Azmoun assisted Rostov's first goal in their 2–0 win against Terek Grozny. However, CSKA won their match and Rostov finished as runners up, thus securing a UEFA Champions League playoff spot.
Azmoun finished seventh in league scoring with nine goals, despite getting half as much playing time as some other top scorers.[33] He was also voted as the fifth most valuable player of the league, narrowly behind players such asFyodor Smolov,Moussa Doumbia, and Brazilian superstarHulk.[34]
Initially it was announced that Azmoun would return toRubin Kazan. However, Rostov triggered the buy out clause in Azmoun's contract. Rubin Kazan denied this clause and claimed Azmoun was their player. Rubin lodged a complaint withFIFA. FC Rostov filed a counter-complaint with theCourt of Arbitration for Sport, and on 22 July 2016 CAS temporarily ruled in favour of Azmoun and he was included in Rostov's UEFA Champions League squad.[35] According to Rostov's lawyer Yuri Zaytsev, the final CAS decision on his status might not be reached until late 2016 or even the summer of 2017.[36]
Azmoun made his Champions League debut on 26 July 2016 in the first leg of a third-round qualifying round match againstAnderlecht atOlimp – 2, coming on forAleksandr Bukharov at the 56th minute.[37] He started in the return leg on 3 August 2016 and scored his first Champions League goal in the 47th minute, helping Rostov advance 4–2 on aggregate.[38] He scored his second Champions League goal on 24 August 2016 in the return leg of the playoff round match againstAjax, scoring the opening goal in a 4–1 victory which resulted in Rostov advancing to the group stage of the Champions League for the first time.[39] Azmoun scored on 1 November 2016 in a Rostov's 2–1 Champions League group stage loss againstAtlético Madrid. In the process, he became the first Iranian to score in the Champions League group stage sinceAli Karimi in 2005. On 23 November 2016, Azmoun scored his second Champions League goal in the group stage againstBayern Munich at home, leading Rostov to a 3–2 victory and their first ever official Champions League group stage win.
On 6 November 2016, Azmoun scored his first Russian Premier League goal of the 2016–17 season in a 4–1 victory. He scored his second goal of the season on 28 November against Anzhi Makhachkala. On 26 January 2017, FIFA rejected appeals by Rubin Kazan related to Azmoun's transfer to Rostov and ruled that there were no obligations outstanding towards Rubin.[43] On 3 March 2017, in the first league game after the end of the winter break, Azmoun scored twice in a 6–0 victory againstTom Tomsk.[44] He scored another brace against his former side Rubin Kazan.
After the end of the 2016–17 season, Azmoun received interest from Scottish sideCeltic, English Premier League club Everton, andLa Liga sideValencia.[45][46]
In June 2017, Azmoun returned to Rubin Kazan. He appeared in a friendly on 28 June 2017 as a second-half substitute, wearing number 69.[47] FC Rostov confirmed the transfer agreement with Rubin on 14 July 2017.[48][49]
On 1 February 2019, he signed a 3.5-year contract with Zenit St. Petersburg.[50] Sardar scored two goals and registered one assist in his debut start for Zenit againstFenerbahçe in the Round of 32 in the UEFA Europa League. He was chosen as the Player of the Week for his outstanding performance by UEFA.[51] On 2 March 2019, he scored the only goal of the game to give Zenit a 1–0 victory overUral Yekaterinburg in his Russian Premier League debut for the team.[52] On 31 March 2019, in a home game he doubled againstFC Orenburg.[53] On 17 September 2019, Azmoun scored the first goal of the2019–20 UEFA Champions League group stage in his Champions League debut for Zenit againstOlympique Lyonnais.[54] With a goal againstBenfica in the following match, he surpassedMehdi Mahdavikia andAli Daei to become the most prolific Iranian goal scorer in the UEFA Champions League with four goals.[55]
On 2 May 2021, he scored a hat-trick to bring his league season scoring total to 19, as Zenit secured their third title in a row in a 6–1 victory over second-placeLokomotiv Moscow.[58] He was overtaken as the league top scorer by his teammateArtem Dzyuba in the last game of the season on 16 May 2021 when Dzyuba scored four to bring his total to 20.[59] He was voted RPL Player of the Season for the2020–21 Russian Premier League season.[60]
On 22 January 2022,Bundesliga clubBayer Leverkusen announced that Azmoun had signed a pre-contract to join the club on afree transfer on 1 July 2022. He signed a five-year contract withDie Werkself.[61] On 30 January, Zenit announced that the clubs have agreed on a winter transfer and Azmoun would move to Bayer Leverkusen immediately.[62]
On 26 August 2023, Azmoun joinedSerie A sideRoma on loan for the2023–24 season under managerJosé Mourinho.[63] Roma also agreed an option to sign him permanently from Bayer Leverkusen.[63] Azmoun is Roma's third Asian player in club history, and is the first Iranian to play for the club.[64] Azmoun was not included in Roma'sUEFA Europa League group stage squad due toUEFA Financial Fair Play Regulations.[65] He scored his first goal for Roma on 5 November 2023 againstLecce.[66] In February 2024, Azmoun was included inDaniele De Rossi's UEFA Europa League knockout stage squad.[67] In May 2024, it was reported that Roma would not be activating the buy option for Azmoun.[68]
In July 2024, Azmoun moved toShabab Al Ahli of theUAE Pro League, having agreed a three-year contract.[69] The transfer fee paid to Bayer Leverkusen was reported as €5 million plus €1 million in potential bonuses.[69]
Azmoun made his senior debut on 26 May 2014 in a friendly match againstMontenegro, coming on as a substitute in the 60th minute forReza Ghoochannejhad.[76] However, he was not included in Iran's squad for the2014 FIFA World Cup, announced on 1 June 2014.[77] He scored his first goal on 18 November 2014 in a 1–0 friendly win overSouth Korea.[78]Azmoun was called into Iran's2015 AFC Asian Cup squad on 30 December 2014 by Carlos Queiroz.[79] He scored a goal in the next match, a 1–0 friendly win overrivalsIraq. He then scored the winner in the second game of the Asian Cup with a great piece of individual skill againstQatar.[80] He also opened the scoring againstIraq in the quarter-finals with a header.
On 16 June 2015, Azmoun scored a goal againstTurkmenistan in a2018 FIFA World Cup qualifier. On 3 September 2015, he scored his first senior brace in a 6–0 defeat ofGuam in the World Cup qualifiers.[81] He scored his firsthat-trick for Iranian national team in 3–0 win overMacedonia atPhilip II Arena on 2 June 2016. Eight days later, he scored the first goal in Iran's 2–0 win overUzbekistan which secured qualification to the2018 FIFA World Cup.[82] In June 2018 he was named in Iran's finalsquad for the2018 World Cup inRussia.[83] He made his first World Cup appearance in a 1–0 victory overMorocco in their first group stage match on 15 June.[84]
Azmoun retired from International football at the age of 23 just after Iran's2018 World Cup exit due to insults he received from fans, which, he said, had caused his mother's illness to worsen. Azmoun chose to retire to be by his mother's side.[85]
During the 2022Mahsa Amini protests, Azmoun took a public stance against the Iranian government. He indicated his public views could cost him the ability to play in the World Cup, but he said "That is worth sacrificing for one strand of Iranian women's hair". He was nevertheless allowed to play in a friendly against Senegal, at which he scored an equalizing goal which he declined to celebrate.[87]
Azmoun has been praised for his aerial ability, creativity, and bursts of acceleration.[88] He has been referred to as a youngZlatan Ibrahimović[89] and has also been called theIranian Messi by mainly British media.[30]
Azmoun has also been touted to be the heir of legendary Iranian strikerAli Daei.[90]
Azmoun decided to retire from International football at the age of 23 just after Iran's2018 World Cup exit due to heavy criticism he faced from fans, as the criticism caused his mother's illness to worsen. As a result, Azmoun chose to retire to be by his mother's side. He has returned to the team after taking this break.[98]
Outside of his footballing life, Azmoun is a keen equestrian, and is active inthoroughbredhorse racing andbreeding. He owns the Serik Horse Complex, a major horse racing and breeding complex based in his hometown ofGonbad-e Kavus. In a February 2022 interview Azmoun said that he owns 52 horses.[101] In 2020, he bought the Australian thoroughbred horse Serlik for $500,000; Serlik is trained by Australian jockeyMichelle Payne.[102] In 2021, Azmoun bought a second Australian horse for $70,000, a Palentino colt also to be trained by Payne.[103]
Azmoun is also the owner of Serik Gonbad Kavus Women's Volleyball Club in Iran. As of the 2022–23 season, the team will participate in Iran Women's Volleyball Premier League.[104]