Abraraw Chane (PhD)Lemita Dinote2025-07-302025-07-302024-10https://etd.aau.edu.et/handle/123456789/5790The purpose of this study was assessing the effect of Change Management on Organizational Performance in ethio telecom at HO. To attain this objective, the researcher has employed descriptive and explanatory research design to its intent to find the effect of the independent variables change management practices such as leadership, communication, employees’ engagement and readiness for change on the dependent variable organizational performance. The correlation analysis reveals strong positive relationships, particularly highlighting the importance of communication, employee engagement, and readiness for change in influencing performance. Descriptive statistics indicate consistent perceptions across these variables, with communication scoring highest and readiness for change lowest. The regression model is highly significant, explaining approximately 61.7% of the variance in organizational performance, as confirmed by ANOVA results. The most significant predictor of performance is readiness for change (β=0.527, p<0.001\beta = 0.527, p < 0.001β=0.527, p<0.001), followed by communication (β=0.142, p=0.044\beta = 0.142, p = 0.044β=0.142, p=0.044) and employee engagement (β=0.172, p=0.024\beta = 0.172, p = 0.024β=0.172, p=0.024). Leadership, although important, does not show a significant direct impact when other variables are considered (p=0.982p = 0.982p=0.982). Based on these findings, the study concludes that enhancing readiness for change, improving communication, and increasing employee engagement are critical for boosting operational performance. Recommendations include conducting regular readiness assessments, establishing transparent communication channels, implementing engagement initiatives, developing leadership skills focused on change management, and continuously monitoring and refining strategies to sustain high performance. These insights provide a roadmap for organizations aiming to navigate change effectively and achieve superior operational outcomes. Key Words: Change Management, Operational Performance, ethio-telecom, Leadership, Communication, Employees Engagement, Readiness for Change,en-USThesis