The value of human resource is an advantage to any organization and as a result training and development become a matter that has to be confronted by every organization. The practice of training in any organization is continuous process to refining the ability of employees. It is an effort to improve their performance, it is also an attempt made by the employer to provide opportunity for the employee to obtain enhanced job interrelated knowledge, skill and abilities. Therefore, the objective of the study was to assess the effect of training and development on employees’ performance in African Union Commission. The research is based on primary and secondary data. The primary data was collected using self-administered questioners distributed to 138 respondents. The researcher used SPSS 20, descriptive statistics, correlation and regression analysis to analyze the data collected and to evaluate the relationship between the two variables. There is positive but low degree correlation between training need assessment and job performance (r = 0.351, p