IQ and Global Inequality

IQ and Global Inequality is a 2006 book by psychologist Richard Lynn and political scientist Tatu Vanhanen. IQ and Global Inequality is follow-up to their 2002 book IQ and the Wealth of Nations, an expansion of the argument that international differences in current economic development are due in part to differences in average national intelligence as indicated by national IQ estimates, and a response to critics. The book was published by Washington Summit Publishers, a white nationalist and eugenicist publishing group.

Lynn and Vanhanen's research on national IQs has attracted widespread criticism of the book's scores, methodology, and conclusions.