Research on the U.S. women’s movement has documented the difficulties of cross-racial work between White women and women of racial/ethnic minorities. Less understood is how racial/ethnic minorities do cross-racial work among themselves to construct a collective identity of "women of color" that encourages solidarity across race, class, and other statuses. Drawing on research from the reproductive justice movement, I examine how women of color organizations that strive for intersectional praxis negotiate sameness and difference. I identify two different logics at work within women of color organizations: the first relies on a presumption of "same difference" that emphasizes similar experiences of gender and race oppression; the second accords greater recognition to the "difference-in-sameness" that structures constituents’ lived experiences. While the former can reproduce precisely those forms of silencing and exclusion that women of color organizations seek to challenge, the second remains a (necessarily) ongoing process. The article concludes that women of color organizations must strive continuously to actively negotiate, rather than assume, commonality if they are to avoid reproducing various forms of marginalization and inequality.