Elevated blood pressure is an important public health problem in midlife women, especially among minority groups. Few studies have examined the impact of perceived unfair treatment due to different factors such as racism, sexism, or ageism on blood pressure. By use of a racially/ethnically diverse community sample of nearly 3,300 midlife women enrolled in the longitudinal, multisite Study of Women's Health across the Nation between 1995 and 1997, this study examined whether perceived unfair treatment varied by race/ethnicity and whether it was associated with blood pressure levels. Overall, unfair treatment was reported by 65% of African-American women, 60% of Chinese women, 36% of Japanese women, 47% of White women, and 27% of Hispanic women. Although racial/ethnic differences in blood pressure were evident, high levels of perceived unfair treatment were not a correlate of elevated blood pressure.