PURPOSE: We aimed to assess psychosocial predictors of quality of life (QOL) among women living with HIV/AIDS (WLHIV). QOL has been considered as an important indicator in evaluating the outcome of psychological and physical healthcare in people living with HIV (PLHIV). METHODS: This cross-sectional study was carried out from October 2021 to April 2022 at the Voluntary, Counselling, and Testing (VCT) center in Shiraz, Iran. A total of 452 WLHIV were included in this study. Socio-demographic and clinical data, social support (MSPSS questionnaire), food insecurity (HFIAS questionnaire), resilience (CD-RISC questionnaire), mental health status (DASS questionnaire), and QOL (WHOQOL-BREF questionnaire) were collected through direct interviews and patients' files at Shiraz VCT. RESULTS: Physical and social relationships domains of QOL had the highest (60.48 ± 18.00) and lowest (36.76 ± 23.88) scores, respectively. Higher clinical stage, psychotropic substances use, having a husband infected with HIV, history of hypertension, and higher socioeconomic status had a significant relationship with some domains of QOL. The score of social support, food insecurity, resilience, and mental health status had a significant relationship with all domains of QOL. CONCLUSION: Social relationships domain of QOL had the lowest scores in WLHIV. Also, the mental health status of WLHIV was more related to their QOL than the physical status related to HIV/AIDS. Interventions such as improving the mental health care and resilience skills of WLHIV, including their social network in counseling services to promote their social support, could help them to improve their QOL.