This study examined the influence of the family on native Dutch attitudes toward having ethnic minority members as kin through marriage using multiactor data from the Netherlands Kinship Panel Study (N = 1,652). Results from multilevel models showed that 28% of the variation in ethnic attitudes can be ascribed to the family. We investigated different pathways through which the family affects these attitudes; 60% of the family influence was explained. Results revealed that the intergenerational congruence of attitudes and the transmission of attitudes and structural and cultural positions are important mechanisms. Furthermore, family characteristics in adulthood—strength and warmth of family relationships—related to intermarriage attitudes, and the strength of family relationships moderated attitude congruence within families.