This article describes the systematic examination and membership consultation process undertaken to define evaluation within the Canadian context. To that end, the article (a) presents the findings from a literature scan and analysis of social media postings, (b) considers the outcomes of the audience discussion during the presentation at the 2013 Canadian Evaluation Society conference, and (c) off ers ideas for next steps. Together, the literature scan results, social media analysis, and membership discussion reveal that no single definition currently exists. Further, there are indications that a shared definition would be difficult to achieve within the Canadian evaluation community. Among the potential implications discussed is that a single definition might restrict or oversimplify the current scope of practice, given the wide range of contexts and purposes for evaluation in Canada.