INTRODUCTION: Rates for HIV are disproportionately higher for Black men who have sex with men (MSM) compared to other MSM in the U.S. While there is evidence that low perceived risk of HIV infection may increase HIV vulnerability, few studies have examined this relationship among Black MSM in the Southern U.S. where the HIV rates are the highest in the country. This study examined the association between perceived HIV risk and PrEP adoption among Black MSM in a medium-size city in Mississippi. METHODS: Data were drawn from a subsample of the "ACCELERATE!" intervention, an innovative and sustainable community-driven project to improve health outcomes among Black MSM. The outcome of interest was PrEP uptake, a binary variable derived from responses to the question "Have you taken PrEP in the last year?". The perceived risk of HIV, an independent variable, is measured by self-report of an individual's assessment of their vulnerability of contracting HIV defined as low versus high risk. Covariates included age and socio-environmental factors (health insurance, incarceration and discrimination) Sample characteristics were provided using means and standard deviations for continuous variables and proportions for categorical variables. Exact logistic regression was used to assess the association between perceived HIV risk and PrEP adoption, adjusting for covariates. RESULTS: A total of 84 HIV negative Black men with a median age of 30 (min = 18, max = 69) years were available for analyses. Approximately 16% of participants reported experiencing incarceration and 57% reported experiencing discrimination. Seven out of ten respondents reported having low perceived risk, and 28.6% (24/84) reported having high perceived risk for HIV. There were 73 participants (86.9%) who reported PrEP use in the last year. We observed a higher proportion of participants with high perceived risk that reported lower uptake of PrEP. After adjusting for age, socioeconomic variables, and risky sexual behaviors, higher levels of perceived risk of HIV were associated with decreased odds of PrEP uptake (OR = 0.20, 95% CI: 0.04-0.94, = 0.040). CONCLUSION: The role of HIV risk perception on PrEP adoption is complex among Black MSM in Mississippi. Higher levels of perceived risk of HIV were associated with lower odds of PrEP adoption among Black MSM. This inverse relationship between HIV risk perception and PrEP adoption suggests social- and structural- factors play a critical role in decision-making on PrEP initiation among Black MSM in Jackson. In addition, further longitudinal studies are needed to understand the complex interactions between perceived risk and PrEP use.