Introduction: In shared decision making (SDM), clinicians and patients make decisions together using the best evidence, along with patients’ preferences and values. Though SDM is a strategy recommended in guidelines to improve hypertension (HTN) control, SDM likely varies by individual characteristics such as race/ethnicity. Hypothesis: SDM and its determinants will vary by race/ethnicity. Methods: Within a pragmatic trial (The RICH LIFE Project) to reduce HTN disparities among individuals with uncontrolled HTN, we examined individual characteristics at baseline (ie, systolic and diastolic blood pressure (BP), age, sex, race/ethnicity, education, health literacy, subjective numeracy, and health status) to identify determinants of SDM at 12 months using multivariable logistic regression. SDM was measured using CollaboRATE; “top score” reflected highest possible score of 27. Results: Participants (n=1,266) were non-Hispanic (NH) Black (57%), NH White (35%) and Hispanic (8%); 41% male; with mean age 61 (±11.68). At baseline, Hispanics were more likely to have ≤ high school education (87%), <15,000 household income (44%), poor health status (24%), poor HTN knowledge (26%), and inadequate health literacy (59%) compared to NH Blacks and Whites (p<0.001). Mean systolic (153.6±13.1) and diastolic (87.5±12.24) BP were highest among NH Blacks. At 12 months, SDM mean scores were higher among NH Blacks, 7.5± 2.4, than Hispanics, 6.9±3, and NH Whites, 6.6± 2.9. Black race, higher education, and better health status predicted higher SDM (highest score of 27 on CollaboRATE scale) (Table). Conclusion: Race/ethnicity, education, and health status predict SDM among individuals with uncontrolled hypertension. Further research is needed to understand factors influencing SDM and opportunities for cultural-tailoring of interventions to improve SDM and HTN control.