RESUMEN
Introduction: The use of modern family planning methods is key for achieving the prevention of unintended pregnancies among women living with HIV, in the prevention of Mother-to-child transmission (PMTCT) package. The purpose of this study was to examine the factors influencing the utilization of modern family planning services by persons living with HIV at Luwero Hospital, Uganda. Methods: The study was conducted among 210 persons living with HIV attending the ART clinic and was based on cross-sectional descriptive and analytical design. Sampling was by simple random techniques. Data was collected using researcher-administered questionnaires. Results: The uptake of Modern FP services is low (36.7%) among persons living with HIV. It was attributed to client-related factors such as being married [AOR: 2.2, 95% CI [1.123-4.140], p = 0.038]) and other factors. These are; religious views discouraging use of modern FP (p= 0.034), negative side effects (AOR: 1.8, 95% CI [0.043-1.968], p = 0.044) and services being unfriendly for persons living with HIV (p=0.000]). Conclusions: Despite the presence of modern family planning services, uptake among persons living with HIV is low. Poor utilization is a recipe for unintended pregnancy and thus jeopardizes efforts in the elimination of mother-to-child transmission of HIV