Reporting guidelines complement journals' instructions to authors. They usually take the form of a checklist, providing structured advice on how to report research studies. This chapter summarizes the main steps in the development of evidence-based consensus guidelines for reporting health research studies. Successful development of a reporting guideline requires an executive group of three to five members to facilitate and coordinate the process. The chapter explains the developing a reporting guideline in five phases: the initial steps of developing a strong rationale for the guidance and ensuring that others have not already done so, the premeeting activities that include preparatory work required for a successful meeting, the face-to-face consensus meeting activities that enable the collaborative work of a full guideline development group, the postmeeting activities that include developing the final guidance and related documents for publication, and postpublication activities to support guideline implementation.