Monika Hilker (born March 24, 1959 in Friesoythe, Germany) is a biologist and a professor at the Freie Universität Berlin.
She leads the Applied Zoology/Animal Ecology working group at the Freie Universität, studying the chemical and molecular ecology of plant-insect interactions.
She is also the speaker and director of the Collaborative Research Centre (CRC) 973 "Priming and Memory of Organismic Responses to Stress".