Marjan Ingrid Olyslager (born 8 March 1962) is a retired Dutch sprinter.

Nationally, she set multiple records and won 12 titles in hurdles events.

In 1984, she set a national record in the 100 m hurdles at 13.20 s, but fell 0.02 s short of the Olympic qualification.

[4][5] In Winter 1988 she married Roel Wingbermühle, started working as a system analyst and paid little attention to training.

[6] In 1989 she won a national 60 m hurdles title, and finished fourth at the European Indoor Championships and sixth at the World Indoor Championships, setting a new national record at 7.89 s. She retired in late 1989, but remained active as an athletics coach.