AbstractThe focus of this study is bystanders’ behavior and their willingness to intervene in cases of intimate partner violence (IPV) in three different countries (China, Italy, and Ethiopia), considering individual and social factors (i.e., right-wing Authoritarianism, masculinity ideology, and gender). The Italian sample was made up of 192 participants (56% male). The Chinese sample was made up of 274 participants (66% female). The Ethiopian sample was made up of 161 participants (53.3% female). Participants completed the Male Role Norms Inventory–Short Form, the Right-wing Authoritarianism Scale, and the Willingness to intervene in cases of IPVAW. The Chinese model suggested how masculinity ideology is negatively associated with “reporting the incident to the authorities” factor, and positively with “not my business” factor. Right-wing authoritarianism is positively associated with “reporting the incident to the authorities” factor. The Italian model suggested how masculinity ideology was positively related to the “reporting the incident to the authorities” factor, and gender was negatively related to “not my business” factor, and positively related to “personal involvement” factor. The Ethiopian model suggested how masculinity ideology is positively associated with “personal involvement in the case” factor and gender is positively associated with the “reporting the incident to the authorities” factor. Masculine ideologies, authoritarian personality characteristics, and gender are predisposing factors toward bystander attitudes when confronted with cases of intimate partner violence. Our findings highlight key areas of focus to help raise awareness related to IPV cases, and policy aimed at promoting prosocial society.