|Nanna Koerstz Madsen|
|Born||23 October 1994|
|Height||1.71 m (5 ft 7 in)|
|Residence||Nørrebro, Copenhagen, Denmark|
|College||University of South Carolina|
|Current tour(s)||LPGA Tour|
Ladies European Tour
|Former tour(s)||Symetra Tour|
|Number of wins by tour|
|Ladies European Tour||1|
|Best results in LPGA major championships|
|ANA Inspiration||T66: 2019|
|Women's PGA C'ship||CUT: 2018, 2019|
|U.S. Women's Open||T16: 2019|
|Women's British Open||T21: 2015|
|Evian Championship||72nd: 2019|
Nanna Koerstz Madsen (born 23 October 1994) is a Danish professional golfer. She represented Denmark at the 2016 Summer Olympics in Rio de Janeiro, Brazil where she ended as a tied 13. She is presently playing on the American LPGA Tour while at the same time trying to retain her membership on the Ladies European Tour (LET).
At the end of the season 2014, Madsen finished as the best European amateur player on the World Amateur Golf Ranking. She played college golf for one semester at the University of South Carolina, winning one tournament.
Madsen was a rookie on the Ladies European Tour in 2015 after earning her LET card by winning the Lalla Aicha Tour School Final Qualifying. On the 2015 Ladies European Tour, she finished 9th on the Order of Merit. She won the 2016 Tipsport Golf Masters. On the 2016 Ladies European Tour, she finished 6th on the Order of Merit. She devoted the 2017 season to earning a membership on the LPGA Tour by playing the season on the Symetra Tour where she as a rookie became a three-time winner that led her to become the 12th player in Tour history to earn a "Battlefield Promotion" to the LPGA Tour, playing in three events between late August and early September. She started as a rookie on the LPGA Tour from the beginning of the 2018 season.
Results not in chronological order before 2019.
|U.S. Women's Open||CUT||T16|
|Women's PGA Championship||CUT||CUT|
|The Evian Championship ^||CUT||CUT||72|
|Women's British Open||T21||T37||CUT||CUT|
^ The Evian Championship was added as a major in 2013.
CUT = missed the half-way cut
"T" = tied
|U.S. Women's Open||0||0||0||0||0||1||2||1|
|Women's PGA Championship||0||0||0||0||0||0||2||0|
|The Evian Championship||0||0||0||0||0||0||3||1|
|Women's British Open||0||0||0||0||0||1||4||2|