Tsin-is-tum, also known as Jennie Michel (c. 1814–1905, Clatsop), was a Native American folklorist based on the Pacific Coast of Oregon. Called "Last of the Clatsops" at the time of her death in 1905, Tsin-is-tum was much photographed. She provided oral history for scholars of the indigenous peoples of the Pacific Northwest region of the United States. Among her accounts was of family members who interacted with members of the Lewis and Clark expedition in the winter of 1805-1806; she helped historians to locate salt works they had used.