This book investigates the new construct of knowledge quality amongst SMEs. Initially by delineating the main dimensions of knowledge quality which are intrinsic knowledge quality, contextual knowledge quality, and actionable knowledge quality and also examining the essential antecedents of knowledge quality, including, functional diversity, absorptive capacity, and knowledge networks. Apart from examining the aforementioned concepts, the study examines the relation between knowledge quality and innovation. Data are reaped from questionnaire issued to SMEs inside industrial parks of Tehran city (capital of Iran) and descriptive statistics, frequency statistics as well as regression analysis are applied.