- POD(Plan of the Day)
- PODL(Post Overseas Detachment Leave)
- PODS(Publication Ordering And Distribution System)
- POE(Perl Object Environment|| Port Of Embarkation Polyol Ester Power Over Ethernet)
- Poe.(Posse ("To be able", or, "The ability to do a thing"))
- POEM(Play, Organize, Execution, and Manage)
- Poenit.(Poenitentia ("Penance"))
- Poenit. Ap.(Poenitentiaria Apostolica ("Office of the Apostolic Penitentiary"))
- POES(Polar Operational Environment Satellite)
- POET(Population, Organization, Environment, and Technology)
- POETS(Portable Occultation, Eclipse, and Transit electronic-camera System)
- POF(Phase of flight)
