Authored by James Dennison and Mohamed Nasr, this Migration Research Series paper explores public attitudes to immigration in the Arab world and considers their effects on migration policies in the region. Using quantitative data from across the Arabic-speaking world, the paper first examines the relationship between attitudes to immigration and a number of sociodemographic and attitudinal variables. It then analyses the salience – or importance – of immigration as an issue in the region before probing the key determinants of migration policy change, which include public opinion, in four main countries.