This study examined change management and organizational performance in manufacturing companies in Anambra state, Nigeria. Relevant conceptual, theoretical and empirical literatures were reviewed. This study was anchored on organizational change and Lewin`s Three Step Model . Descriptive survey design was adopted, and primary data was employed. The population for the study was 286 employees working at the selected manufacturing companies in Anambra State. The entire population was used as the sample size for this study.The major instrument used for data collection was the questionnaire.  Content Validity was adopted, and the test-retest method was used to test reliability of the research instrument. The study found that technological changes have a positive significant effect on organizational performance in manufacturing companies. Change management strategies have a positive significant effect on organizational performance in manufacturing companies in Anambra state. Leadership changes have a positive significant influence on organizational performance in manufacturing companies in Anambra state. The study concluded that change management has a positive significant effect on organizational performance in manufacturing companies in Anambra state. The study recommends that technology change had influenced employee performance since it simplifies the work to be done,thereby making work more efficient. Organizations which implement new technology should provide proper training to their employees to increase their performance. Every organization should build strong organizational management strategies that help to build good relationships based on their values, norms, behaviours, and perceptions.Leadership changes leaders’ mind-set, style, and behavior.The change process they design as a result of their orientation must encourage employees to want to participate, to choose to contribute, rather than force them to do so.