This study examined public stigma associated with Alzheimer's disease (AD) among Korean Americans and identified factors affecting their public stigma. Data used in the study were collected using a cross-sectional survey with 268 Korean Americans. Guided by attribution theory, different domains of public stigma were assessed: pity, antipathy, and social distance. Hierarchical regression analyses were conducted to examine the effects of sociodemographic characteristics, exposure to AD, social networking, and AD knowledge on each stigma domain. The influence of emotional attributions (pity and antipathy) on behavioral attributions (social distance) in the stigma process suggested in attribution theory was also examined. Results show that pity is most prevalent followed by social distance and antipathy. Being more proficient in English, knowing fewer relatives/friends with AD, and knowing less about AD risk factors are associated with having more pity stigma. Being less socially engaged and knowing less about AD risk factors are related to having more antipathy stigma. Being younger and more proficient in English and having stronger antipathy stigma are associated with having more social distance stigma. Findings reveal multifaceted nature of public stigma associated with AD in Korean Americans and suggest that we need to work on both positive and negative sides of public stigma for stigma change. Findings of different factors associated with each public stigma domain can be considered when trying to foster and/or reduce certain stigmatic beliefs and behaviors associated with AD.