Self-report information about mistreatment experiences and perpetrators were collected from a large sample of women over 55 years of age who sought care from Midwestern primary care offices. A significantly larger proportion of women had experienced sexual mistreatment since turning 55 that was perpetrated by an intimate partner than committed by an interpersonal perpetrator. The women experienced significantly more threats, physical mistreatment, and caregiver mistreatment since turning 55, and more threats and caregiver mistreatment within the last year by an interpersonal perpetrator than by an intimate partner. Several women described different types of perpetrators who had threatened or mistreated them. Few women reported the mistreatment to anyone. Implications for elder service providers and advocates are discussed.