PurposeThe paper presents a study on whether citizens’ immigration attitudes shape their attitudes towards social welfare in three Nordic countries.Design/methodology/approachThe main analysis was performed using linear regression analysis. Data were retrieved from the eighth round of the European Social Survey (2016). The data cover the Finnish, Norwegian and Swedish respondents (N = 5,021).FindingsThe analyses indicate that citizens’ immigration attitudes are associated with their social welfare attitudes. The more positive the attitudes towards immigration are, the more positive the attitudes toward social welfare will be. Further, people in the political Left have more positive attitudes towards social welfare compared to those in the political Right; but, the immigration issue is more divisive of the political Left’s opinion than that of the Right.Research limitations/implicationsPublic opinion research has its limitations because behind an individual’s opinion there are many hidden factors. An individual may also have different opinions depending on the dimensions of the welfare state.Social implicationsIf the immigration issue reduces the support for social welfare among the political Left, it may reduce the legitimacy of the Nordic social policy because the support of the political Left has traditionally been in favour of the universal principles of the welfare state.Originality/valueThe association of the immigration issue and social welfare attitudes has been broadly studied; but, the interaction of the immigration issue and political opinion on social welfare attitudes is less studied.