Organizational evaluation capacity building has been a topic of increasing interest in recent years. However, the actual dimensions of evaluation capacity have not been clearly articulated through empirical research. This study sought to address this gap by identifying the key dimensions of evaluation capacity in Canadian federal government organizations. The methodology used, based on Leithwood and Montgomery's "Innovation Profile" approach, featured semistructured interviews with evaluation experts and a validating exercise conducted in four government organizations. The framework developed as a result of the study identifies six main dimensions of evaluation capacity (human resources, organizational resources, evaluation planning and activities, evaluation literacy, organizational decision making, and learning benefits), each one broken down into further subdimensions. The evaluation capacity of organizations on each of these dimensions and subdimensions can be described using four levels: low, developing, intermediate, and exemplary. The study found that government organizations vary in terms of their capacity from one dimension to the next, and indeed, from one subdimension to the next. (Contains 6 tables.)