Karen Margrethe Juul (born 23 December 1975) is a Danish professional golfer.

Aged 14, she made her debut at the club's division team, and by 18 years old she participated in her first women's European Championship.

In 2001, Juul finished second in the 2001 Q-School to qualify for the Ladies European Tour and turned professional.

[5] In 2006, she held off a final-day challenge from Laura Davies and Trish Johnson to seal victory in the Nykredit Masters by four strokes, clinching her first Ladies European Tour title, after a closing 68 gave a 15-under-par total of 273.

[7] In 2007 she represented Denmark at the Women's World Cup of Golf with Iben Tinning.