Authored by Rasadhika Sharma and Ulrike Grote, this publication in the Migration Research Series analyses what determines Internet usage among internal migrants in two countries in South-East Asia. The paper is based on data collected under the Thailand Viet Nam Socio Economic Panel migrant tracking survey, with a sample of 709 internal migrants from Viet Nam and Thailand. It examines if, and to what extent, internal migrants’ demographic characteristics, their personal traits and economic background influence their Internet usage in terms of social interaction, information-seeking, entertainment and commercial transactions.