IHA

IHA may refer to:
 * Acronyms
 * Ice Hockey Australia, Ice Hockey Australia
 * Indonesia Handball Association, governing body of handball in Indonesia
 * Idiopathic hyperaldosteronism, an endocrinological disease
 * İhlas Haber Ajansı, the Turkish İhlas News Agency
 * Immaculate Heart Academy, Catholic high school in New Jersey
 * Imperial Household Agency, the Japanese government agency that oversees Royal affairs
 * Independence Hall Association
 * Indian Heart Association, non-profit dedicated to raising cardiovascular and stroke health awareness
 * Indirect Hemagglutination Test, A form of agglutination test that involves red blood cells
 * Ingeniørhøjskolen i Aarhus, the Engineering College of Aarhus, Denmark
 * Institute for Healthcare Advancement, a not-for-profit, private operating foundation providing health care and improving health literacy
 * Intel Hub Architecture, chipset and bus architecture for Intel Pentium 4, Intel, Pentium III-based systems
 * International Housewares Association, trade organization promoting sales and marketing of housewares, est. 1938
 * International Hydropower Association, a not-for-profit, international organization representing the hydropower sector, with a Central Office located in London, UK
 * Israel Handball Association, governing body of team handball in Israel