This study aimed to contribute to the discussion of Korean bi-ethnic socialization by examining the parenting experiences of Korean fathers in multicultural families. A thematic analysis was used to analyze data obtained from in-depth interviews with 14 Korean fathers married to women from Cambodia, the Philippines, Vietnam, Thailand, and Nepal. The identity of fathers as a multicultural family emerged as a core topic. Based on the types of identity as a multicultural family Korean fathers were classified into three distinct groups: (1) Fathers who positively identify as a multicultural family, (2) fathers who negatively identify as a multicultural family, and (3) fathers who refuse to identify as a multicultural family. These groups varied in terms of bi-ethnic socialization, particularly in the following five areas: participation in parenting, opinions on children’s bi-ethnic identity, attitudes towards children learning the wife’s native language, perceptions of social discrimination, and dealing with potential discrimination that their children may experience. The results of this study are significant in the following ways. First, the results showed differences in bi-ethnic socialization practices according to how the fathers identified themselves as a multicultural family. Second, the study drew a theoretical discussion on the role of fathers in the bi-ethnic socialization of Korean multicultural families. Third, this study aimed for a three-dimensional investigation of Korean fathers in multicultural families, who have been typically regarded as a single homogeneous group. Lastly, this study contributed to the dissolution of existing stereotypes on Korean fathers of multicultural families.