Mercedes "Mercy" Thompson is a fictional character and the protagonist of The Mercedes Thompson Series, written by Patricia Briggs. The series, which currently consists of the novels Moon Called, Blood Bound, Iron Kissed, Bone Crossed, Silver Borne, and River Marked, is narrated from Mercy's point of view.

In the novels, Mercy Thompson is the daughter of a Blackfeet Indian and a white teenage mother. She is a "Walker" (a Native American shapeshifter not linked to the moon) who turns into a coyote, a gift she inherited from her father.