The application of and investment in sponsorship globally has been increasing rapidly for over 20 years while the theoretical development and practical ability to evaluate its effectiveness has lagged behind. A strong theoretical foundation and improved evaluation tools are required. Agency Theory and Performance Measurement are adopted in this regard; articulating the sponsor-sponsee relationship as an example of the principal-agent relationship. This book recognizes the importance of the explicit (formal) and implicit (unwritten) objectives of both sponsor and sponsee in effectively evaluating a sponsorship and focuses on the evaluation of the sponsorship contract in both its explicit and implicit forms. A review of the literature and a series of expert interviews and consultations were used to explore the sponsor- sponsee relationship, and provide the basis for the construction and development of a sponsorship evaluation process model. The process model was then tested by adopting it to evaluate two major sponsorships: Kanatek s sponsorship of an expedition to Mount Everest, and ATB Bank s sponsorship of the Edmonton Grand Prix.