IDEX

IDEX can refer to several things, including:


 * International Defence Exhibition, a biennial arms and defense technology sales exhibition
 * IDEX Corporation, a publicly listed company that makes fluidics systems and specialty engineered products
 * Ideanomics, a publicly traded company that trades under the IDEX ticker symbol.
 * Idex ASA, a Norwegian biometrics company
 * Independent Dual Extrusion, a 3D printing technology