Credibility of evidence in evaluation is examined through the lens of dialectical pluralism (DP). Principles of procedural justice are a core element of DP and help justify outcomes of its application. A key message is that DP and the associated circle of scientific evidence and knowledge model can aid the evaluation community in producing an inclusive evaluation knowledge generation, dissemination, and use system, where practice-to-theory and theory-to-practice evidence continually inform each other in a multiple stakeholder environment. (Contains 1 figure.)