VPI

VPI may refer to:


 * Vapor phase infiltration, a synonym for sequential infiltration synthesis
 * Velopharyngeal insufficiency, a medical term
 * Verilog Procedural Interface, in computer programming
 * Vertical Politics Institute, a conservative political action committee
 * Vietnam Petroleum Institute
 * Virginia Polytechnic Institute and State University (a.k.a. Virginia Tech)
 * Virtual path identifier, in computer networking
 * Visegrad Patent Institute, a patent organization created by the four Visegrad countries
 * Vocational Preference Inventory
 * VPI Industries, a manufacturer of phonographs
 * VPIphotonics, photonic simulation tool