| Jakarta International School | Academic & Science |
| Juggling Information Service | Business |
| Joint Interpretive Statement | Business |
| Jewelers International Showcase, Inc. | Business |
| Jerudong International School | Community |
| John Ireland School | Community |
| Jakarta Intercultural School | Community |
| Jihad Ibrahim Saaduddin | Computing |
| Japanese Industrial Standard | Computing |
| Japanese Industry Standard | Electronics |
| Jergens Industrial Supply | General |
| Jeykhun Imanov Studio | General |
| Jamaica Information Service | General |
| Japan Industry Standard | General |
| Jones Industrial Services | General |
| Just In Sequence | General |
| Japanese Industrial Standards | General |
| Jaringan Informasi Sekolah | General |
| Japan Industries Standards | General |
| Japon Industries Standards | General |
| Japan Industrial Standard | General |
| Japan Industrial Standards | General |
| Journal of Information Science | General |
| Jewelers International Showcase | General |
| Image Studio | General |
| Judicial Information Services | Governmental |
| Judicial Information Systems | Governmental |
| Justice Informations Services | Governmental |
| Justice Is Served | Governmental |
| Jewelers International Showcase Jewelers International Showcase | International |
| Japanese International School | International |
| Just In Service | Internet |
| Job Index Survey | Jobs |
| Job Impact Statement | Jobs |
| Job Information Service | Jobs |
| Joint Information System | Military and Defence |
| Jabber Interoperability Suite | Softwares |
| Joint Integrated Simulation | Space Science |
| Jurisdictional Interstate Service | Telecommunication |
