Marlies Anne van Baalen (born 30 August 1980 in Den Bosch, North Brabant) is a Dutch Dressage equestrian.

Van Baalen represented the Netherlands at the 2004 Summer Olympics where she finished in 43rd position in the individual rankings.

With the Dutch dressage team, in which she featured with Anky van Grunsven, Sven Rothenberger and Imke Bartels, she finished just outside the medal spots with the fourth place.

She was the first reserve for the Dutch team during the European Championships in Rotterdam 2011.

This biographical article related to Netherlands equestrianism is a stub.