Under what conditions do native citizens vocalize opposition to displaced persons (including both refugees and economic migrants? Why, moreover, does native citizens’ opposition intensify against non co-ethnic displaced persons while it attenuates against co-ethnic displaced persons? Examining these questions, this paper draws upon a new, original, and nationally representative survey of 2700 respondents from the Middle East and North Africa region (MENA). Conducted in Morocco in 2018, the survey tracks variation in citizens’ opposition to displaced persons and, further, explains why significantly stronger opposition exists toward non co-ethnic ones (specifically sub-Saharan Africans). Cohering with findings from studies on ant-migrant attitudes from Western Europe, this study confirms that both economic and cultural theories help to explain variation in citizen opposition. Native citizens who perceive displaced persons—especially sub-Saharan African migrants—as depressing their wages, utilizing public services, and threatening their culture are more likely to voice opposition. These factors also seem to predict citizens’ stronger opposition toward sub-Saharan Africans when compared with Arab displaced persons, like Syrians and Iraqis. Yet, this study takes a new tack by introducing a previously unexplored variable: Fear of AIDS. In addition to both economic and cultural factors, our survey demonstrates that fear of AIDS transmission also likely plays a role in driving native citizens’ oppositional attitudes in the MENA region. The paper concludes by offering policy recommendations, specifically greater AIDS health education, to help depress such sentiment.