Extermination through labour (or "extermination through work", German: Vernichtung durch Arbeit) is a term that was adopted to describe forced labor in Nazi concentration camps in light of the high mortality rate and poor conditions; in some camps a majority of prisoners died within a few months. In the 21st century, research has questioned whether there was a general policy of extermination through labor in the Nazi concentration camp system because of widely varying conditions between camps. German historian Jens-Christian Wagner argues that the camp system involved the exploitation of forced labor of some prisoners and the systematic murder of others, especially Jews, with only limited overlap between these two groups.

Some writers, notably Aleksandr Solzhenitsyn, have written that the Soviet Gulag system was also a form of extermination through labour. Similar statements have been made about the Laogai system under Mao Zedong's China.