This study was conducted to measure the impact of the proactive personality to job job performance through job crafting of employees at Vietcombank in Ho Chi Minh City. The study conducted a survey of 182 employees at Vietcombank transaction offices in Ho Chi Minh City. Research data was analyzed by techniques: descriptive statistics, scale reliability, EFA, CFA, and SEM. The results of the factor analysis show that the proactive personality scale consists of one component; the job crafting scale consists of three components: increasing structural job resources, increasing social job resources and increasing challenging job requirement; the job performance scale consists of one component. The results of the SEM analysis showed that the proactive personality and job crafting had a positive impact on the job performance of employees. From the results of the analysis, the study suggests some solutions that need to be focused on to motivate the proactive personality and the job crafting in order to improve the job performance of the employees at Vietcombank in Ho Chi Minh City.