This study investigated the effects of ethnic minority adolescents' ethnic self‐identification (host country, dual, or heritage country) on friendship choices among ethnic majority and minority peers. Hypotheses were derived from similarity–attraction and social identity theory and tested using longitudinal social network data from 1,004 middle school students (five schools) in Germany. Results showed that ethnic minority adolescents' ethnic self‐identification affected friendship selection beyond ethnic homophily. While host country and dual identification was beneficial with respect to friendships with both ethnic majority and minority peers, heritage country identification was detrimental to relations with both of them.