The purpose of this document is to provide agencies with a guide with three tools containing key assessment questions that are of common relevance to all actors involved in Mental Health and Psychosocial Support (MHPSS) independent of the phase of the emergency. This guide will be useful for rapid assessments of MHPSS issues in humanitarian emergencies across sectors. The guide is designed for use by various humanitarian actors (governmental and non-governmental; local, national and global). It is based on the IASC Guidelines on Mental Health and Psychosocial Support in Emergency Settings (IASC, 2007).