Henry David Thoreau’s interest in Native Americans is widely known and a recurring topic of scholarly attention, yet it is also a source of debate. This is a figure who both had a deep interest in Native American history and culture and was seen by many of his contemporaries, including Ralph Waldo Emerson and Nathaniel Hawthorne, as “more like an Indian” than his white neighbors. At the same time, Thoreau did little to protest the systematic dispossession of Indigenous people across the country in his lifetime. John J. Kucich charges into this contradiction, considering how Thoreau could demonstrate respect for Native American beliefs on one hand and ignore the genocide of this group, actively happening throughout his life, on the other. Thoreau’s long study of Native peoples, as reflected in so much of his writing, allowed him to glimpse an Indigenous worldview, but it never fully freed him from the blind spots of settler colonialism. Drawing on Indigenous studies and critiques of settler colonialism, as well as new materialist approaches that illustrate Thoreau’s radical reimagining of the relationship between humans and the natural world, Unsettling Thoreau explores the stakes of Thoreau’s effort to live mindfully and ethically in place when living alongside, or replacing marginalized peoples. By examining the vast sweep of his writings, including the unpublished Indian Notebooks, and placing them alongside Native writers and communities in and beyond New England, this book gauges Thoreau’s effort to use Indigenous knowledge to reimagine a settler colonial world, without removing him from its trappings.