Poles exhibit contrasting attitudes towards absent Muslim refugees and physically present Ukrainian labor immigrants. Both groups have been historically seen as “Significant Others,” potentially perilous to the nation. Today, however, Muslims are rejected, while Ukrainians are accepted. This situation can be attributed to historical, ethnic, political, social, and economic factors, all of which are discussed here. The ethnic, linguistic, and religious superhomogeneity of Polish society affects the approach to the “culturally distant” Muslim migrants who were cynically rejected by the right-wing populist authorities during the 2015 refugee crisis. Economic necessity justifies the acceptance of the Ukrainians, who are perceived as culturally close. It is argued here that within the category of Significant Others, it is necessary to distinguish between Distant/Absent/Hostile and Familiar/Present/Tolerated Significant Others.