This article discusses issues related to the development and dissemination of evidence-based assessment strategies for anxiety disorders and associated problems. It begins with a review of the criteria that should be considered when determining whether particular assessment procedures are evidence-based. These include such factors as reliability, validity, cost-effectiveness, consumer acceptability, utility across different populations, and ease of dissemination. The importance of considering the purpose of the assessment process when deciding whether a procedure is evidence-based is emphasized. Next, the major assessment domains that are particularly important in the area of anxiety disorders (e.g., triggers for anxiety symptoms, avoidance behaviors) are reviewed. Finally, some potential obstacles to the dissemination of evidence-based assessment procedures are discussed along with suggestions for managing these obstacles.