This study examines Arab American intermarriage using 1990 U.S. Census data. The results indicate high rates of intermarriage consistent with an assimilation perspective. Over 80% of U.S.-born Arabs had non-Arab spouses, implying a diminishing ethnic identification. Logistic regressions show that for both sexes, those with part Arab ancestry, the U.S. born, those with strong English-language ability, and the highly educated were significantly more likely to out-marry, as were Arabs of Lebanese ancestry. The cultural and structural assimilation of Arab Americans is facilitating intermarriage, with indicators of acculturation being the strongest predictors, especially for women. The article further discusses ethnic options for children of intermarried couples.