Conflict is a part of everyday life of an individual or organization. it is an inevitable part of organization’s life because the goals different stakeholders such as managers and workers are often incompatible. One of the major challenges facing managers of industrial organizations is how to ensure organizational productivity through prevention and resolution of industrial conflict and grievances in the nations organizations both public and private using non-violent approaches or strategies. For management to be efficient, it must devote some part of its time to the management of conflicts since it is unavoidable. Conflict has considerable influence on employee behaviour, performance and satisfaction. It also affect on organization’s effectiveness. It is on this premises that this research was developed to carry out an empirical study on Imperative of Effective Conflict Management and Resolution in Nigerian Organizations – A Survey of Selected Manufacturing Companies in Delta State with a view to identifying major causes of conflicts, various strategies organizations have adopted to manage conflict situations; determine the effectiveness of the conflict resolution strategies adopted by the organizations, investigate the role played by conflict in influencing organizational performance, ascertain the significance of conflict in stimulating interest and creativity in organizations, identify the role played by conflict in enhancing morale and cohesion in organizations. A set of structured questionnaire was used as the instrument for data collection and administered on 60 management staff randomly selected from the companies under studying using Yaro Yamane formula. Applying this formula, the sample size from a population of 70 is 60 respondents at 95% confidence level. Data analysis was made using simple percentage tables and hypotheses were tested using chi-square statistic. The results showed that positive and significant relationship exists between conflict and organizational performance, stimulating interest and creativity, and enhancing morale and cohesion in the organizations studied. Based on the results obtained, it was recommended that adequate information and communication should be provided in organizations, expansion of resources, equitable allocation of values/rewards, effective style of leadership, good union-management relationship, goal setting, employees’ right of appeal and a host of other strategies for effective conflict resolutions and management in organizations.