PKI

PKI may refer to:


 * Partai Komunis Indonesia, the Communist Party of Indonesia
 * Peter Kiewit Institute, an Information Technology and Engineering school of the University of Nebraska system
 * Protein kinase inhibitor, a type of enzyme inhibitor that specifically blocks the action of one or more protein kinases
 * Public key infrastructure, a computer security technology
 * Paramount’s Kings Island, a theme park in Ohio (now simply Kings Island)