Jonna Eva-Maj Adlerteg (born 6 June 1995) is a Swedish gymnast. She won the bronze medal on bars at the 2010 Summer Youth Olympics in Singapore. Adlerteg competed at the 2012 Olympic Games in London and the 2020 Olympic Games in Tokyo, becoming the second Swedish gymnast during the 21st century to qualify for the Olympics after Veronica Wagner. Adlerteg took Sweden's first medal in gymnastics in over 50 years when she won the silver medal on the uneven bars at the 2013 Europe Championships.