Those with whom the evaluator(s) negotiates evaluation purposes and intended uses, often the individuals, groups, or organizations who hire the evaluator. Clients are also stakeholders.
Yarbrough, D. B., Shulha, L. M., Hopson, R. K., and Caruthers, F. A. (2011). The program evaluation standards: A guide for evaluators and evaluation users (3rd ed.). Thousand Oaks, CA: Sage.