PU
- Pu – (s) Plutonium
- PU
- (s) Guinea-Bissau (FIPS 10-4 country code)
- (i) Polyurethane
- (s) United States Miscellaneous Pacific Islands (ISO 3166 digram; obsolete 1986)
- Pub – (p) Publication
- PUG – (a/i) PET Users Group
- PUN – (a/i) Pull-Up Network
- PUP – (a/i) Pull-Up Point
- PUR – (s) Puerto Rico (IOC and FIFA trigram, but not ISO 3166)
- pus – (s) Pashto language (ISO 639-2 code)
- PUS – (s) United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
Read more about this topic: List Of Acronyms And Initialisms: P