| Abbreviation | Definition |
|---|---|
| PSDD | Political Social Development Diploma |
| PSDP | Pashtoons Social Democratic Party |
| PSDP | Phalon-Sawaw Democratic Party |
| PSDR | Partidul Social Democrat Român |
| PSM | Parti Sosialis Malaysia |
| PSP | Pak Sar Zameen Party (Pakistan) |
| PSP | Peoples Salvation Party |
| PSPA | Political Science and Public Administration |
| PSPE | Political Science and Political Economy |
| PSPU | Progressive Socialist Party of Ukraine |
| PSRI | Political Science Replication Initiative |
| PSRM | Party of Socialists of the Republic of Moldova |
| PSRP | People's Socialist Revolutionary Party |
| PSRP | Political Science Research Pool |
| PSRP | Political Settlements Research Programme |
| PSSU | Political Science Student Union |
| PTCD | Political Theory and Constitutional Democracy |
| PTDC | Political Twitter Discourse Corpus |
| PTI | Pakistan Tehreek e Insaf |
| PTI | Pakistan Tehreek-e-Insaf |