| PIS | Participant Information Sheet 
| Others |
| PIS | Party in Saigon
| Others |
| PIS | Patient Information Sheet
| Others |
| PIS | Payment Initiation Services
| Others |
| PIS | Penguins In Space
| Others |
| PIS | Penning Ionization Spectroscopy
| Others |
| PIS | Perfect Is S***
| Others |
| PIS | Perfectly Inelastic Supply
| Others |
| PIS | Permanent Island School
| Others |
| PIs | Personal Information Protection System
| Others |
| PIS | Personal Information System
| Others |
| PIS | Personnel Identification System
| Others |
| PIS | Pharmacy Information System
| Others |
| PIS | Pharmacy Information Systems
| Others |
| PIS | Phuket International School (Quality Schools International)
| Others |
| PIS | Physical Inspection Scores
| Others |
| PIs | Physical Interfaces
| Others |
| PIS | Pinnacle Infotech Solution
| Others |
| PIS | Plains Indian Sign Language
| Others |
| PIS | Plant Inspection Stations
| Others |
| PIS | Please Ignore Seriously
| Others |
| PIS | Plot Induced Stupidity
| Others |
| PIS | Point of Initial Slippage
| Others |
| PIS | Poitiers, France
| Others |
| PIS | Police Interceptor Sedan
| Others |
| PIS | Politeknik Ibrahim Sultan
| Others |
| PIS | Polities Indsats Styrke
| Others |
| PIS | Politiets Indsats Styrke
| Others |
| PIS | Portfolio Investment Scheme
| Others |
| PIS | Poslovni Informacioni Sistemi
| Others |
| PIS | Post Imprisonment Supervison
| Others |
| PIS | Poster Induced Stupidity
| Others |
| PIS | Precision Investment Services
| Others |
| PIS | Premier Ibrahim Sultan
| Others |
| PIS | Prescribing Information System
| Others |
| PIS | Privacy Invasive Software
| Others |
| PIS | Problemss In Society
| Others |
| PIS | Process, Interrupts, Signals
| Others |
| PIS | Processing Information Structure
| Others |
| PIS | Product Information Sheets
| Others |
| PIS | Product Information System
| Others |
| PIS | Professional Investment Services
| Others |
| PIS | Progressive Induction System
| Others |
| PIS | Project Implementation Schedule
| Others |
| PIS | Project Information System
| Others |
| PIS | Property Investment Service
| Others |
| PIs | Protocol Interfaces
| Others |
| PIS | Provider of Independent Service
| Others |