- (chemistry) Initialism of .
- (computer games) Initialism of .
- (computing) Initialism of .
- (physiology) Initialism of .
PSP m (uncountable)
- (Brazil) Abbreviation of .
PSP f (uncountable)
- (Portugal) Abbreviation of .
- Partido Social Progressista on the Portuguese Wikipedia.Wikipedia pt
- Polícia de Segurança Pública on the Portuguese Wikipedia.Wikipedia pt
- Initialism of , published regularly by Slovak Academy of Sciences. The PSP is the official handbook of proper Slovak spelling, as well as the rules of Slovak grammar.