One way to examine the research contribution in structuring knowledge about an Information system (IS) phenomenon is to understand its theoretical state, trends and traits (structural nature of theory). We performed a theoretical assessment of one specific IS phenomenon: Information systems/technology (IS/T) leadership. IS/T leadership is a process followed by the top IS executives to affect various stakeholders to achieve the IS/T related goals aligned with the organizational mission and vision. We performed a systematic literature review, and categorized the surveyed articles based on the Gregor’s taxonomy of theory types in IS research to identify the type of theories developed and used in IS/T research. Our findings demonstrate the interest in theory used for explaining and predicting IS/T leadership research.