Abstract: Spiritual formation is the most urgent need of evangelical churches today, with organizational culture expected to play a critical role in the process of bringing change among church members in the districts of Wolaita Zone, Ethiopia. Lack of spiritual formation results in the development of immorality among church members. Spirituality crisis is a base for moral, economic and political crisis of the modern world. The purpose of this study is to investigate the role of organizational culture on spiritual formation of church members in the districts of Wolaita Zone, Ethiopia. The study used a descriptive survey research design. Open and closed ended questionnaires being used to collect data from 385 church members and leaders. Data was analyzed using Statistical Package for the Social Science (SPSS) Version 27. The results indicates that organizational culture had a strong positive correlation with spiritual formation at (R=0.684, p< .01) and the coefficients of determination of the role of organizational culture were 15.8% and 28.3% respectively. It brought 12.5% change in spiritual formation among church members. The study has a potential contribution to the body of knowledge in churches of Wolaita Sodo, Ethiopia and beyond.