Since 2004, the country of Georgia has provided antiretroviral therapy (ART) to all patients in need. A nationwide retrospective cohort study was conducted to assess the effect of universal access to ART on patterns of mortality and causes of death among HIV-infected individuals in Georgia. All known HIV-infected adult individuals (age ≥18 years) diagnosed from 1989 through 2012 were included. Rates and causes of death were determined using routinely collected data from the national HIV/AIDS database. Causes of death were classified according to the Coding of Death in HIV (CoDe) protocol. Between 1989 and 2012, 3,554 HIV-infected adults were registered in Georgia contributing to 13,572 person-years (PY) of follow-up. A total of 779 deaths were registered during follow-up. The mortality rate peaked in 2004 with 10.74 deaths per 100 PY (95% CI: 7.92-14.24) and significantly decreased after the universal availability of ART to 4.02 per 100 PY (95% CI: 3.28-4.87) in 2012. In multivariate analysis the strongest predictor of mortality was having AIDS at the time of HIV diagnosis (hazard ratio: 5.69, 95% CI: 4.72-6.85). AIDS-related diseases accounted for the majority of deaths (n=426, 54.7%). Tuberculosis (TB) was the leading cause of death accounting for 21% of the total deaths reported. Universal access to ART significantly reduced mortality among HIV-infected patients in Georgia. However, overall mortality rates remain high primarily due to late diagnosis, and TB remains a significant cause of death. Improving rates of early HIV diagnosis and ART initiation may further decrease mortality as well as prevent new HIV and TB infections.