Marijn van Dijk (born 6 August 1972)[1] is a Dutch linguist.

She is currently an associate professor of developmental psychology at the Faculty of Behavioural and Social Sciences of the University of Groningen, Netherlands.

[2] van Dijk obtained her PhD at the University of Groningen in 2004.

The title of her thesis was Child Language Cuts Capers: Variability and Ambiguity in Early Child Development, and it was supervised by her future colleague Paul van Geert.

[4] She is one of the members of the "Dutch School of Dynamic Systems" who proposed to apply time-series data to study second language development along with van Geert, Lowie, de Bot and Verspoor.