This study examines how a desire to pass on religious heritage shapes whites’ attitudes toward interracial marriage for their children. Utilizing national survey data (Baylor Religion Survey 2007), I estimate ordered logit regression models to examine the extent to which whites’ desire to have their children and children's spouses share their religion affects attitudes toward their hypothetical daughters marrying blacks, Latinos, or Asians, net of other factors. Analyses reveal that whites who consider it more important that their children and children's spouses share their religion are less comfortable with their daughters marrying blacks, Latinos, or Asians. These effects are robust to the inclusion of measures for religiosity, political ideology, intimate interracial experiences, and other sociodemographic correlates. These findings suggest that, for whites, religious heritage has a clear ethno‐racial component. The greater their desire for descendants to share the same religious views, the more whites would prefer that these descendants themselves be white, indicating that, for many white Americans, religious heritage is equated with whiteness. I conclude by discussing the implications of these findings for research on religion and interracial families.