Implementing an ERP system which has a broad scope and scale is a major change and business transformation event. In such cases, sound organizational governance - which ensures transparency and control of all organisational activities, appropriate levels of accountability, clearly identified decision making structures and attention to risks relating to organisational culture - is vital in ERP implementation. This paper contributes an analysis of the role of organizational governance in ERP-driven business transformation. Its importance is illustrated through an indepth interpretative study of a challenged ERP implementation in a large Australian service organisation.