Jonna Eva-Maj Adlerteg (born 6 June 1995) is a Swedish retired artistic gymnast and a two-time European Championships silver medalist.

During her junior career, she won the bronze medal on the uneven bars at the 2010 Summer Youth Olympics.

[3] Adlerteg competed at the Junior European Championships and finished eleventh in the all-around and fourth on the uneven bars.

[8] Adlerteg made her senior international debut at the 2011 Cottbus World Cup, but she did not advance into any event finals.

[12] At the Ghent World Challenge Cup, she finished fourth on uneven bars and sixth on floor exercise.

[17] She was the third Swedish female gymnast to be selected for the Olympic Games, after Lena Adomat in 1980 and 1984 and Veronica Wagner in 2004.

[20] She represented Sweden at the 2012 Summer Olympics and at age 17 was the youngest athlete on the Swedish team.

[22][23] Adlerteg won a silver medal on the uneven bars at the 2013 European Championships, behind Aliya Mustafina.

[25] She chose to withdraw from the World Championships after having an allergic reaction a few weeks before the competition along with other health issues.

[31] She helped the Swedish team finish fourth at the Novara Cup and had the highest score of the competition on the uneven bars.

[33] Adlerteg started the 2015 season at the Cottbus World Challenge Cup and won the gold medal in the uneven bars final.

[37][38] Adlerteg returned to competition in 2016 and won the gold medal on the uneven bars at the Doha World Challenge Cup.

[40] She returned to competition at the 2017 Szombathely World Challenge Cup and won the gold medal on the uneven bars.

[42] Adlerteg began the season at the Nordic Championships and helped the Swedish team win the silver medal, behind Norway.

[50] Adlerteg made her season debut at the Melbourne World Cup, where she finished fourth on the uneven bars.

[68] In the fall of 2020, Adlerteg began studying at Örebro University in the biomedical analyst program.