Gregoria Mariska Tunjung Cahyaningsih (born 11 August 1999) is an Indonesian badminton player in women's singles. She started her career at the badminton club PB Mutiara Cardinal in Bandung, West Java, and was called to the national team in 2013. She was the girls' singles champion at the 2017 World Junior Championships. Tunjung also captained the Indonesia women's team at the 2022 Asia Team Championships, where they became champions.
Career
In 2014, Tunjung reached the final of the Malaysia International from qualifying round, beating among them the first seed Aprilia Yuswandari. Unfortunately, in the final round she was defeated by Chen Jiayuan in straight game. In 2015, at the age of 16, Tunjung became champion at the Singapore International, defeating home favorite Yeo Jia Min in the final. She later won the Indonesia International Challenge held in Surabaya.
In 2016, Tunjung won the silver medal in the girls' singles event at the Asian Junior Championships.
Tunjung opened the 2017 season by reaching the final of the BWF Grand Prix in the Syed Modi International. She finished as runner-up after her defeat to first seed and 2016 Olympic silver medalist P. V. Sindhu. She also finished runner-up to Kisona Selvaduray at the Indonesia International Series. In August, Tunjung obtained bronze medals at the individual and team events of the SEA Games. In October, Tunjung becomes the first Indonesian in 25 years to win the World Junior Championship girls' singles title.
Despite being a junior champion, Tunjung's senior career was quite tumultuous. In 2018, she won her only title that year at the Finnish Open, beating her compatriot Ruselli Hartawan in the final. She obtained a silver women's teams medal at the 2019 SEA Games, but did not won the individual event medals as she was stopped by Kisona Selvaduray in the quarter-finals.
Tunjung qualified for the Tokyo Olympics as the sole Indonesian representative in women's singles. Her Olympic debut ended in the round of 16 with a defeat against Ratchanok Intanon. She was part of the Indonesian team for the 2021 Sudirman Cup. Indonesia advanced to the knockout stage but lost at the quarterfinals against Malaysia. Later she competed at the postponed 2020 Uber Cup. Her results at the BWF World Tour tournaments were far from ideal, with second round exits at the European leg in Denmark, France, Germany, and home tournament Indonesia Masters, followed by a first round exit at the Indonesia Open.
Tunjung started 2022 on a higher note as the captain of the Indonesian women's team at the Asia Team Championships, winning all her matches from the group stage and contributing to their victory against South Korea in the final. However, her struggle in individual tournaments persisted, and her rank went down to 31 after her first round exit at the Indonesia Open. At the second half of 2022, Tunjung won bronze in the women's singles at the 2021 SEA Games, and obtained silver in the women's teams event. She then reached her first finals in the BWF World Tour event in the 2022 Australian Open. In the final, she lost to An Se-young in straight games. Thanks to her runner-up finish in Australia, Tunjung edged closer to qualify for the 2022 BWF World Tour Finals, and officially became the first ever Indonesian women singles player to qualify for the World Tour Finals after the withdrawal of P. V. Sindhu opened a spot for her promotion. She finished fourth in Group A standings with a victory against Chen Yufei and losses against An Se-young and Akane Yamaguchi.