This handbook is meant to be a quick-reference tool that provides practical guidance on leadership roles, key responsibilities and specific actions to be taken when establishing and maintaining a GBV coordination mechanism in an emergency. The handbook is based on the Inter-agency Standing Committee’s (IASC) Guidelines for Gender-based Violence Interventions in Humanitarian Settings (2005) and also takes into account lessons learned, good practices and emerging resources related to GBV coordination within the cluster approach/humanitarian reform process as well as relatively recent global initiatives on GBV in emergencies, such as UN Action.