Racial discrimination and race-based trauma (RBT) have led to the development of various negative psychological and physiological effects among Black adults in the USA. There is a lack of understanding in relation to how various psychosocial factors influence posttraumatic growth (PTG) in the context of RBT among Black adults. The authors examined associations of RBT, racial identity, and mindfulness with PTG among Black adults while controlling for gender, household income, and duration of trauma. The sample consisted of 134 self-identified Black adults who met the criteria for RBT from the USA. The hierarchical regression analysis showed the final model with all the predictors accounted for 35% of the total variance of PTG, with racial identity and mindfulness facets accounting for 26% of the variance. The study provides a foundation for future research addressing RBT and promoting PTG in Black adults.