PS
- ps
- (s) Pashto language (ISO 639-1 code)
- picosecond
- pS – (s) picosiemens
- Ps – (s) petasecond
- PS
- (s) Palestinian Territory, Occupied (ISO 3166 digram)
- (i) Personnel Services
- (s) petasiemens
- (i) post scriptum (Latin, "written after")
- Power Steering
- Power Supply
- Public School
- PooS – Poo Sniffer (Internet short-hand)
- PSA
- (i) Paralysis Society of America
- Pharmaceutical Society of Australia
- Pressure-Sensitive Adhesive
- Production Services Association
- Prostate Specific Antigen
- Public Service Announcement
- Public Service Association
- PSC
- (i) Personal service corporation
- Primary Somatosensory Cortex
- PSE – (s) Palestinian Territory, Occupied (ISO 3166 trigram)
- PSG – (i) Pacific Seabird Group
- PSI - (i) Pounds per square inch
- PSI – (a/i) Portable Source Initiative
- PSO
- (i) Peace Support Operations
- Primary Standardisation Office (ABCA)
- Protocol Supporting Organization (of the ICANN)
- PSS – (i) Personnel System Support
- PST – (i) Pacific Standard Time (UTC-8 hours)
- PSU – (i) Pennsylvania State University
- PSV
- (i) Philips Sport Vereniging (Dutch for "Philips Sports Union")
- Public Service Vehicle
- PsyOp – (p) Psychological Operations
Read more about this topic: List Of Acronyms And Initialisms: P