The history of eugenics is often described through individual events, laws, and policies. This timeline provides context for the who, what, where, and when of eugenics. Our goal with this timeline is to synthesize trends and historical processes that can not be fully understood by looking at isolated events. We center the contestations and labor that marginalized peoples continually bring against eugenics. This timeline is by no means comprehensive, and we encourage those who are interested to visit the Eugenics Archives for a year-by-year breakdown of events.