The contributions document how income inequality in the Nordics in various dimensions have increased over recent decades. These developments are put in an international context. Developments in Denmark, Finland, Norway and Sweden are compared. Important aspects analysed in detail are overall inequality of both market and disposable incomes, the redistribution through the tax and transfer system as well as through the provision of government welfare services, the importance of demographic factors, the developments of both relative poverty and top income shares, and gender inequality.