The objective of the research was to determine the relationship between sociodemographic factors: age, sex, time of illness, level of education and origin; and non-adherence to ART in adults with HIV/AIDS who attend the Health Services Provider Institution I-4 Requena, in 2019. Methodology: the observational method was used, the type of design was descriptive, correlational and retrospective. The study population consisted of 84 patients. The instrument used was the questionnaire, made up of two sections, in the first section 5 items related to sociodemographic factors were considered and the second section consisted of 11 items related to nonadherence. The time required for its application was 10 minutes, it had a validity of 96.9% and a reliability of 0.811. The results indicate that of 84 patients, 97.6% (82) patients presented low non-adherence to treatment, 69.0% (58) were young adu...