| Abbreviation | Definition |
|---|---|
| JS | Joseph Stalin |
| JSD | Juventude Social Democrata |
| JSFP | Jill Stein for President |
| JSP | Jana Sena Party |
| JSP | Japan Socialist Party |
| JSP | Jill Stein for President |
| JSPE | Japan Society Of Political Economy |
| JSPP | Journal of Social and Political Psychology |
| JSQM | Jeay Sindh Qaumi Mahaz |
| JUI | Jamiat ulmaey Islam |
| JUIF | Jamiat Ulema-e-Islam (F) |
| JUIF | Jamiat Ulema-e-Islam-Fazl |
| JUL | Jugoslovenska Udruzena Levica (Yugoslav United Left) |
| JUP | Jamiat Ulmaey Pakistan |
| JVP | Janatha Vimukthi Peramuna |
| JW | Jashi Wanachi (People's Force) |
| JWR | Jodie Wilson-Raybould |
| JXSI | Junts pel Si (Catalan for "Together for Yes") |
| KAGA | Keep America Great Again |
| KAP | Kleine Ambassade Projecten |