INB may refer to: INB, a locally owned, privately held national bank based in Springfield, Illinois INB Financial Corporation, an Indianapolis-based statewide bank Instituto Nacional de Bioinformática, the Spanish National Bioinformatics Institute Independence Airport (Belize), the IATA code INB Inter National Bank, a U.S. bank headquartered in McAllen, Texas Intergovernmental negotiating body, established by the World Health Organization for an International Treaty on Pandemic Prevention, Preparedness and Response (working title) inb, the ISO 639-3 code for Inga Kichwa