The English Form of the Scale of Egalitarian Sex Role Attitudes (SESRA) was administered to 238 American women after the original Japanese Form was developed and administered to 420 Japanese women. The results reveal that the English Form has a potential for use as a measurement of American women's sex role attitudes. The results of cross-cultural comparisons suggest that American women have more egalitarian attitudes than their Japanese counterparts, especially in the sex segregation of domestic labor, child-rearing, masculinity, and femininity. However, they share similar attitudes toward the basic concept of the equality of men and women in education, occupation, and society. Assuming that individualism, independence, and egalitarianism are the universal values pursued in the modern world, these similarities can be shared with the women in the other advanced industrial societies, in spite of the cultural differences among them.