This study developed a model to explain management accounting practices (MAP) and internal audit quality (IAQ) as antecedents of enterprise risk management (ERM) practices towards improving organizational performance (OP) of small and medium enterprises (SMEs) in Jordan. In addition, the role of IAQ as a mediating variable in the relationship between MAP and ERM practices was examined. In addressing the study aim, a structured questionnaire was used for data collection from 430 Jordanian SMEs. PLS-SEM was employed for data analysis using WarpPLS (7.0 Version). Our findings revealed a direct and positive significant relationship between MAP, IAQ, and ERM practices. In addition, the relationship between ERM practices and organizational performance was found to be positive and significant. The mediating role of internal audit quality in the relationship between MAP and ERM practices was found to be significant, as well as the mediating role of ERM practices in the relationship between MAP and OP on one hand and between IAQ and OP on the hand was found to be significant. Finally, this study suggests that firms in SMEs in Jordan should use the factors identified in this study as strategic factors and efforts to reinforce ERM practices.