Emma Stina Blackstenius (born 5 February 1996) is a Swedish professional footballer who plays as a forward for Arsenal in the English Women's Super League and the Sweden national team.

On 20 April 2011, Blackstenius made her senior debut for the club against BK Kenty in the Östergötland region Division 3, the fifth tier of women's football in Sweden.

[4] Prior to the start of the 2013 season, Blackstenius signed a three-year contract with Linköping FC of the top-flight Damallsvenskan.

In January 2017, Blackstenius signed a two-and-a-half-year deal with French Division 1 Féminine club Montpellier HSC.

On 19 February 2017, she scored four goals in a Coupe de France 16–0 win over fourth division side FC Domont.

[14] On 14 January 2022, English Super League club Arsenal confirmed the signing of Blackstenius on a free transfer.

[15] She made her debut five days later, as a 69th-minute substitute for Vivianne Miedema in a 1–0 defeat at home to Manchester United in the League Cup quarter-finals.

[22][23] On 30 October 2012, Blackstenius made her Sweden under-17 debut during 2013 UEFA Under-17 Championship qualification, scoring a hattrick in a 9–0 win over Croatia.

She finished as tournament's top goalscorer after scoring six goals for the victorious Swedish team, including two in the 3–1 final win over Spain.

[2] Blackstenius made her senior Sweden national team debut as a 79th-minute substitute in a 1–0 UEFA Euro 2017 qualifying win over Denmark on 27 October 2015, at Gamla Ullevi.

In the quarter-final against the reigning World Cup and Olympic champions United States, she came off the bench to replace the injured Fridolina Rolfö in the 18th minute and scored in the second half to give Sweden a lead.

She scored in consecutive group games against Russia and Italy before Sweden were knocked out at the quarter-final stage by host nation Netherlands.

Sweden repeated their silver medal run with Blackstenius having her most successful tournament to date, leading the team in goals with five.

In the knockout stage, she scored the go-ahead goal in a 3–1 quarter-final win over hosts Japan before again netting in an Olympic gold medal match, this time to give Sweden the lead over Canada.

[32] Despite injury concerns, she was fit enough to be named on the bench for the team's opening group stage game against Netherlands and appeared as a 68th-minute substitute in the 1–1 draw.

[33] She started all four remaining matches, scoring one goal during a 5–0 victory over Portugal,[34] before Sweden were eliminated by hosts England at the semi-final stage 4–0.