| Johnston Community College | Academic & Science |
| Jackson Community College | Academic & Science |
| Jefferson Community College | Academic & Science |
| Junior College Committee | Academic & Science |
| Jamestown Community College | Academic & Science |
| Job Creation Condition | Business |
| Journal of Career Counseling | Business |
| JILIN Chemical Industrial, LTD. | Business |
| Janus Capital Corporation | Business |
| Junior Chamber of Commerce | Business |
| Joslyn Clark Controls | Business |
| Joint Contracts Committee | Community |
| Joliet Community College | Community |
| Jamaica Council of Churches | Community |
| Joint Commercialization Committee | Community |
| Johnny’s Communication Center | Community |
| Jewish Community Center | Community |
| Joint Christian Chaplaincies | Community |
| John Johnson Elementary School | Community |
| Jewish Community Centre | Community |
| Jacksonville Community Council | Community |
| Jewish Community Council | Community |
| Japanese Culture Club | Community |
| Jackson Camry Club | Community |
| June Carter Cash | Community |
| Java Common Connectivity | Computing |
| Jaguar Common Client | Computing |
| Job Control Command | Computing |
| Java Conversion Course | Computing |
| junca Cash | Cryptocurrency |
| Jacksonville Chess Club | General |
| Japanese Crude Cocktail | General |
| Japan Crude Cocktail | General |
| Japan Customs cleared | General |
| Juan Carlos Castro | General |
| John Cooper Challenge | General |
| Jowett Car Club | General |
| Japanese Car Community | General |
| Japanese Car Culture | General |
| Japanese Classic Car | General |
| Jacksonville Corvette Club | General |
| Jensen Car Club | General |
| Japan Car Consultants | General |
| Jeep Cherokee Club | General |
| Jogja Corolla Classic | General |
| Jaguar Collection in Coventry | General |
| Japanese Car Club | General |
| Jaguar Car Club | General |
| Just Cars Club | General |
| Junior Car Club | General |
| Jeep Clube de Curitiba | General |
| Job Corps Center | General |
| Joint Command Center | Governmental |
| Joint Contracting Center | Governmental |
| Joint Course Catalog | Governmental |
| Joint Coordination Center | Governmental |
| Joint Consultative Committee | Governmental |
| Joint Central Committee | Governmental |
| Juventud Comunista de Catalunya | International |
| Jahrbuch der K.K. Central-Commission zur Erforschung und Erhaltung der Bandenkm?er, Viena | International |
| Jahrbuch der K.K. Central-Commission zur Erforschung und Erhaltung der Bandenkmäler, Viena | International |
| Joint Committee on Contraception | Medical |
| Joint Consultants Committee | Medical |
| Journal of Clinical Chiropractic | Medical |
| Junctional Channel Complex | Medical |
| James City County | Regional |
| China Basin Heliport, San Francisco, California USA | Regional |
