OAI

OAI may refer to:


 * Object-action interface
 * Office of American Innovation
 * Omni Air International, a charter airline
 * Open Archives Initiative, standards body
 * Open Archives Initiative Protocol for Metadata Harvesting
 * Open Archives Initiative Object Reuse and Exchange
 * OAI, the IATA code of Bagram Airfield, Afghanistan
 * OR-AND-invert, a logic gate made up of OR gates followed by a NAND gate
 * Shorthand for OpenAI, an AI company