OIM

OIM may refer to:


 * Office for the Internal Market, UK internal trade body
 * OIM (offshore installation manager), an oil-rig worker
 * OIM, IATA code for Oshima Airport, in the island of Izu Ōshima, Tokyo, Japan
 * Tõnu Õim, correspondence chess player
 * Online Identity Management
 * Oracle Identity Management, an identity-management infrastructure for products from Oracle Corporation
 * Organisation internationale pour les migrations, the French name of International Organization for Migration
 * Orientation imaging microscopy