Lesbian, gay, and bisexual (LGB) older adults may be more vulnerable to elder abuse (EA) due to prior marginalization and trauma, lifelong discrimination, and health disparities. While characteristics of both victims and perpetrators can modify the risk for EA, few studies have focused on perpetrators. This study examined the number and type of perpetrator-victim relationships and perpetrator profiles for EA experienced in the prior year, by abuse type and sexual orientation and gender identity of the abused. Data are from community-dwelling Canadian Longitudinal Study on Aging participants aged 65 or older at follow-up 1 (n = 23,466). Heterosexual men and women reported being abused psychologically and physically most often by spouses or partners. Gay and bisexual (GB) men reported being abused psychologically most often by non-family, non-friend “others”. Lesbian and bisexual (LB) women reported psychological and financial abuse most often by siblings or other family members, and physical abuse by non-family, non-friend “others”. Heterosexual women were abused financially most often by their children, and both heterosexual and GB men reported more financial abuse by “others” or friends. Overall, 15% and 5% of participants reported abuse by multiple perpetrators of psychological and financial abuse respectively. LB women experienced more EA overall (18.8%), by multiple perpetrators (31% for psychological abuse, 66.5% for financial abuse) including by their siblings and other family members. These results have important implications for mitigation and preventive measures. They also highlight the need for further research concerning sexual minorities experiencing multiple abuse types and/or abuse by multiple perpetrators.