The current study examined the older adults' self-efficacy in computer use and explored the factors that impacted and mediated their self-efficacy. Older adults (N = 339) were recruited from a western mid-size city in the U.S. and participated in a survey. Results of the path analysis revealed that computer experience and financial health factors were predictors that significantly impacted the outcome, i.e., the older adults' self-efficacy in computer use. Meanwhile, this predicting-outcome relationship was mediated by the mediators like perception of computer role, overall life satisfaction, and emotional well-being. The study is significant in that it contributes to the research and practicing community the understanding of the relationship between older adults' self-efficacy in computer use and the factors that predict and mediate older adults' self-efficacy in computer use. Research has demonstrated that older adults often experience a lack of confidence when using digital technology (Daniel et al., 2011; Zheng et al., 2016). Reneland-Forsman (2018) investigated older adults' digital participation and noted that lacking self-confidence can significantly impact older adults' abilities to use digital technology in meeting their late-life needs including health care, financial management, retirement planning and recreational needs. Although previous research has revealed the relationship between self-efficacy and efficiency of computer use in older adults (Gatti et al., 2017; Reneland-Forsman, 2018), few studies have actually looked into the factors that influence older adults' self-efficacy in computer use. This line of research is important because by determining the factors that impact older adults' self-efficacy in computer use, the educators, curriculum developers and trainers will be able to identify the approaches that are effective for improving older adults' self-efficacy as well as their abilities to confidently use the computers. Therefore, the goal of the current study is to investigate the factors that relate to older adults' self-efficacy in computer use. Theoretical background The increase of aging population is accompanied by a parallel surge in the use of computer and Internet among older adults (Huber & Watson, 2014). A recent study by International Telecommunication Union (2019) showed an estimated 4.1 billion people are using the Internet in 2019, reflecting a 5.3% increase compared with 2018 and 14.5% increase compared with 2014. Among the growing population of Internet users, older people are increasingly becoming active users of social media where they find information, share their experiences and connect with friends and family