White slavery (also white slave trade or white slave trafficking) refers to the slavery of Europeans, whether by non-Europeans (such as West Asians and North Africans), or by other Europeans (for example naval galley slaves or the Vikings' thralls). Slaves of European origin were present in ancient Rome and the Ottoman Empire, and some Muslim dominions.

Many different types of white people were enslaved. On the European continent under feudalism, there were various forms of status applying to people (such as serf, bordar, villein, vagabond, and slave) who were indentured or forced to labor without pay.

Under Muslim rule, the Ottoman slave trade that included European captives was often fueled by raids into European territories or were taken as children in the form of a blood tax from the families of citizens of conquered territories to serve the empire for a variety of functions. In the mid-19th century, the term 'white slavery' was used to describe the Christian slaves that were sold into the Barbary slave trade.

The modern legal term applies more narrowly to sexual slavery, forced prostitution, and human trafficking, with less focus on the race of victims or perpetrators.