S Irudaya Rajan is Chair of the International Institute of Migration and Development (IIMAD), Kerala, India and chair of the KNOMAD (the Global Knowledge Partnership on Migration and Development) thematic working group on internal migration and urbanization, World Bank. He is one of the expert committee members to advise the Government of Kerala on Covid-19. Prior to this, he was a Professor at the Centre for Development Studies. Dr Rajan is the Founding Editor in Chief of Migration and Development (Sage) and the editor of two Routledge series - India Migration Report and South Asia Migration Report. He is a lead editor of the new Springer series – South-South Migration.Professor Rajan has close to forty years of research experience working on broad areas of population and development. He has coordinated nine major large-scale migration surveys in Kerala since 1998 (along with Professor K C Zachariah), Goa (2008), Punjab (2009), Tamil Nadu (2015) and was instrumental in conducting the Gujarat Migration Survey 2011, Jharkhand Migration Survey (2023) and Odisha Migration Survey (2023). Professor Rajan has published extensively in national and international journals on the social, economic, demographic, psychological and political implications of migration on individuals, communities, the economy and society. Recognizing the work done on international migration at CDS, the Ministry of Overseas Indian Affairs, Government of India has set up a Research Unit on International Migration (RUIM) at CDS in 2006 and he was a chair professor of the RUIM from 2006-2016.Professor Rajan was awarded visiting fellowship award 2019, by the British Academy in association with Northumbria University; the Scholars of Excellence Award 2022 of Canada Excellence Research Chair in Migration and Integration of the Toronto, Metropolitan University, Canada; and he has been appointed as a co-chairperson of the Working Group on NORKA (2017-22) for the State Planning Board, Kerala. He currently holds projects on international migration with the International Rice Research Institute, the Social Sciences and Humanities Research Council, Canada, the European Cooperation in Science and Technology, the Japan Society for the Promotion of Science and the Indian Council for Social Science Research.