The aims of this study were to describe the prevalence of access to HIV/AIDS preventive services among male freelance workers in Hanoi and to identify its determinants. The results showed that although male freelance workers had a variety of health problems such as depression, alcohol consumption, drug use, having many sexual partners, sex with female sex workers and non use of condom when having sex with female sex workers, the prevalence and level of access to HIV/AIDS preventive services were low. Knowledge of HIV/AIDS prevention was also fairly limited. Six factors influenced access to HIV/AIDS preventive services among male freelance workers including place of residence, level of education, level of income, level of social connectedness, knowledge of HIV/AIDS prevention and having sex with female sex workers. In conclusion, to reduce risks of HIV/AIDS infection and transmission among male freelance workers, it is suggested that interventions focus on behavioral change communication on HIV/AIDS risks, improve awareness of HIV prevention and enhance male freelance workers' connection to social services and networks (including health services) so they can have opportunities to access and use these services.