Sex work rights activists establish December 17 (or "D17") as International Day to End Violence Against Sex Workers to memorialize victims of a serial killer who targeted prostitutes, and highlight State violence against sex workers by police and others.

The International Day to End Violence Against Sex Workers is observed annually on 17 December by sex workers, their clientele, friends, families and allies. Originally conceived as a memorial and vigil for the victims of the Green River Killer in Seattle, Washington, US, it has evolved into an annual international event. The day calls attention to hate crimes committed against sex workers worldwide, as well as the need to remove the social stigma and discrimination that have contributed to violence against sex workers and indifference from the communities they are part of. Sex worker activists also claim that custom and prohibitionist laws perpetuate such violence.

December 17 is the 351st day of the year in the Gregorian calendar; 14 days remain until the end of the year.