IIH

IIH can refer to:


 * Idiopathic intracranial hypertension
 * Innovations in International Health, an innovation platform that facilitates multidisciplinary research to develop medical technologies for developing world settings
 * Transcription factor II H
 * Instituto de Investigaciones Históricas (Institute of Historical research), a research institute of the National Autonomous University of Mexico
 * International Institute for Hermeneutics