In many Asian countries, men who purchase sex account for the largest single network of people which often face elevated HIV risk in relation to the general population. However, high proportions of these men have never undertaken HIV testing. We assessed barriers to and facilitators of HIV testing among men who purchase sex in Indonesia, including the acceptability of HIV self-testing. A qualitative study was conducted during December 2016-January 2017 at fourteen sex-work venues and one voluntary HIV counselling and testing (VCT) clinic in Bali. Interviews were conducted with men who purchase sex exploring the men's views on HIV testing. Data were examined using thematic analysis. Twenty-nine men participated in the study. The themes that emerged regarding the barriers to HIV testing included fear of potential shame, embarrassment, and confidentiality breach in accessing HIV testing; fear of social exclusion if the test result was positive; self-treatment and prevention; the distance to a clinic; time constraints; and fear of an invasive testing method. Factors that were seen as facilitating a test were the convenience of time and place; the provision of speedy results; and privacy. Participants expressed interest in HIV self-testing and preferred it to clinic-based testing due to the privacy and confidentiality of the results. The findings support the introduction of an HIV self-testing strategy among this group to improve access to HIV testing.