The theme of this chapter is the movement of populations. The EEC has seen waves of refugees, fleeing from invasions or persecution; it encourages the ebb and flow of migrant workers seeking work when it is available and returning ‘home’ when it is not; and then there are the tourists, moving around in their millions. This chapter looks at the lasting impact of the Balkan conflicts of 1912-20 which led to the Greek diaspora of 1922 and its more recent equivalents in Cyprus and ‘Yugoslavia’. The end of colonialism produced populations of returners to France and Portugal who changed their home countries by their return. Then there is a body of research on migrants, both temporary and permanent, and on those who return. Finally, the tourist, a modern form of population movement, is the newest subject of anthropological research.