Frederik Kjettrup (born 2 January 2000) is a Danish professional golfer.

[1] Kjettrup played college golf at Florida State University, where he won three events.

Kjettrup finished eighth in the 2024 PGA Tour University Rankings to earn status on the PGA Tour Americas.

He won three events during the season to be fully exempt on the 2025 Korn Ferry Tour.

[2] In December 2024, Kjettrup signed with LIV Golf for the 2025 season, joining Martin Kaymer's Cleeks GC team.