JIRA's Reviews report allows you to view recent code reviews activity for a project (that is, where a JIRA issue key belonging to the project was referenced in the review's description), if you are using a source-code repository together with Atlassian Crucible.
To be able to view the Reviews report, your JIRA administrator must have configured the FishEye plugin appropriately. You will also need the 'View Version Control' permission in the appropriate projects.
To view the Reviews for a project,
Screenshot: Viewing the recent code reviews for a project