This study on migration examines various aspects of migration of the Indian people: internal migration and displacements due to conflict and disaster, emigration of Indians both during the colonial era and the post- Independence period, illegal emigration of Indians, emergence of vibrant Indian diaspora, the phenomenon of immigration into India including infiltration, and the immigration of refugees and asylum seekers. The impact of environmental degradation and climate change on migration and socio-economic aspects of migration have also been discussed. About the Author: Sarajit Kumar Chatterjee, a former member of the Indian Police Service, has been consistently engaged in in-depth studies of policies that continue to have an impact on all Indians. His earlier books include Communalism and Constitution, Disintegration and Constitution, Panchayati Raj and views of the Founding Fathers, Governor's Role in Indian Constitution, The Scheduled Castes in India, Educational Development of Scheduled Castes: Looking Ahead, North-East India: Disintegration and Discontent, SCs, STs and OBCs in the Indian Polity, Communalism from Indian Perspective and Citizenship Infiltration and NRC.