We have limited information regarding the sexual risk behaviors of HIV-positive individuals in Argentina. It is important to understand these behaviors in order to develop strategies oriented at decreasing unsafe sex practices. A random sample of 140 HIV-positive individuals was recruited from an HIV primary care clinic in Buenos Aires, Argentina, between August and September 2005. Participants responded survey questions regarding their sexual behaviors in the previous three months. Logistic regression analysis was used to determine factors associated with inconsistent condom use during vaginal, anal, and oral sex. Of the 140 participants surveyed, 69% were male, the mean age was 38 years old, 29% reported having less than a high school education, and 84% reported having engaged in vaginal, anal, and/or oral sex in the past 3 months. Of 53 participants who reported engaging in anal sex, 60% were men who have sex with men, and 40% were heterosexuals. Inconsistent condom use was reported by 31% of participants engaging in anal sex, 39% of participants engaging in vaginal sex, and 71% of participants engaging in oral sex. When adjusting for other factors, participants reporting symptoms of depression were 5.2 times more likely to use condoms inconsistently during vaginal sex, and 4.3 times more likely to use condoms inconsistently during anal sex compared to participants reporting no depression symptoms. Providers should assess sexual risk practices of HIV-positive individuals reporting symptoms of depression, and provide counseling regarding the importance of consistent condom use to those patients who are engaging in unsafe sex practices.