An American Genocide: The United States and the California Indian Catastrophe, 1846-1873 is a 2017 non-fiction book about the California genocide by history professor Benjamin Madley.

[1] It was written by Benjamin Madley, a professor of history at the University of California, Los Angeles.

The chronologically arranged[3] book documents the United States-government's role in the 19th-century California genocide.

It gives the pre-1846 history in which Spanish colonisers used Native Americans as a source of low-cost labour, and how Native Americans suffered from both disease and land theft.

"[5] The Journal of the Early Republic described it as "impressive" and praised the author for the quality of his research.