This tutorial introduces Systems Engineering practitioners to Complex System Governance (CSG) as a new and novel advanced systems-science based approach to improve complex system performance. CSG is explored and applied as the design, execution, and development of essential systems functions that provide system control, communications, coordination, and integration – ultimately driving sustainable system performance. Practical application of CSG is emphasized to encourage a different level of thinking, decision, action, and interpretation in response to ‘wicked’ and ‘systemically deep’ sociotechnical system problems. Five tutorial objectives include: (1) explore the complex system problem domain and its apparent immunity to traditional approaches, (2) examine the conceptual basis of CSG found in Systems Theory (principles governing the behavior/performance of all complex systems), Management Cybernetics (the science of effective system structural organization), and System Governance (design for direction, oversight, and accountability), (3) introduce a reference model to help with assessment of nine essential CSG functions, and (4) conduct a CSG assessment to identify, classify, and develop strategies to ‘deep system’ issues. The tutorial introduces concepts through guided discussion, hands-on practical application exercises, and an application case. This approach prepares participants to immediately apply what has been learned to their specific complex systems of interest. As a result of the tutorial, participants will be better prepared and equipped to identify, assess, and more effectively deal with complex systems and their inherent design, execution, and development issues.