- PERMS(Personnel Electronic Records Management System)
- PERN(Preliminary Engineering Release Notice)
- PERP(Perpetrator)
- Perpes(Humorous nickname for PRP, take on herpes)
- PERR(Preliminary Engineering Research Report)
- PERRLA(Pupils equal, round, reactive to light and accommodation)
- PERRMS(PERsonnel Resource Management System)
- PERS(Personal Emergency Response System)
- PERSACS(Personnel Structure and Composition System)
- PERSCO(Personnel Support For Contingency Operations)
- PERSCOM(PERSonnel COMmand)
- PERS DET(Personnel Detachment)
- PERSIB(Persatuan Sepak Bola Indonesia Bandung)
- PERSINS(Personnel Information System)
- PERSISTA(Political, Economic, Religious, Social, Intellectual, Scientific, Technological, Artistic)
- PERSITREP(PERSonnel SITuation REPort)
- PERSLOG(Personnel and Logistics)
- PERSREP(Personnel Report)
- PERSSO(Personnel System Staff Officer)
- PERT(Party Evaluation And Rsvp Training)
- PERTCO(Program Evaluation And Review Technique With Cost)
- PERTO(Pertaining To ....)
- PERTSIM(Program Evaluation and Review Technique Simulation)
- PERT-TAM(Program Evaluation and Review Technique - Task, Action, and Milestone items)
- PERUSA(Perspectives - United States of America history course)
- PES(PolyEtherSulfone)
- PESA(Passive Electronically Scanned Array)
- PESGB(Petroleum Exploration Society of Great Britain)
- PESS(Physical Education And School Sport)
- PEST(UK Public Engagement with Science and Technology)
