Introduction: Worldwide, human immunodeficiency virus (HIV) infection continues to be an emerging public health problem. With the positive screening of this chronic degenerative disease, the virus generates physical, psychological, social and spiritual changes in people, that lead to uncertainty in the face of an uncertain future. Identifying the uncertainty in the patients, allows the care professional to plan integral interventions to favour the reduction of this process and can integrate well-being in the experience with their chronic condition and thus, have quality of life. Objective: To determine the level of uncertainty in a group of people living with HIV. Method: Quantitative, descriptive and transversal study. Non-probabilistic sampling of 30 people living with HIV, from the CONVIHVE Civil Association of Morelia, Michoacán. An identification card and the scale “Uncertainty in front of the disease” (MUIS) of Merle Mishel were applied, with a reliability of (.904). The statistical package SPSS V was used to analyze the data. 22. Results: 83.3% of the total population are men and 16.7% are women, 32-39 years of age (36.6%) of whom 70% are men. Being single, 53.3% have a bachelor’s degree. 60% report being employed. 30% of the population refers to having more than 10 years of diagnosis and less than 5 years in treatment 53.3%. 76.7% are Catholic. From the total of participants, 23.3% showed a low level of uncertainty, followed by a level of regular uncertainty with 26.7%, and 50% showed a high level of uncertainty. Conclusion: The level of uncertainty in people living with HIV is high. It is necessary to carry out comprehensive interventions that favour the reduction of the level of uncertainty and thus improve the well-being and quality of life of people living with HIV.