Certification is one serious issue that faces the field of evaluation. There are many clear-cut reasons why it would be desirable to have a certification process for evaluators, both to help improve the practice of evaluation and to further the field's maturation into a profession. In this article, we reviewed related articles and present the controversies of certifying evaluators. Furthermore, we construe the new policy of credentials evaluators in Canada. We hope it will stimulate discussion and research into certifying evaluators in the near future.