| Acronym | Definition |
|---|
| JCI | Joint Commission International |
| JCI | Junior Chamber International |
| JCI | Journal of Clinical Investigation |
| JCI | Johnson Controls, Inc. |
| JCI | Junior Chamber, Inc. (various locations) |
| JCI | Juan Carlos I (Spain) |
| JCI | Jumper for Chassis Intrusion |
| JCI | Journal Communications, Inc. (est. 1882; Milwaukee, WI) |
| JCI | Jordan Chamber of Industry (Amman, Jordan) |
| JCI | Japanese Cultural Institute (Gardena, CA) |
| JCI | Japan Concrete Institute |
| JCI | Japan Communications, Inc. |
| JCI | Jeune Chambre Internationale (French: Junior Chamber International) |
| JCI | Just Checking In |
| JCI | Journey of the Cross and Icon |
| JCI | Johannesburg Consolidated Investment Company Limited |
| JCI | Jarvis Collegiate Institute |
| JCI | Journal of Communication Inquiry |
| JCI | Juventud Comunista Ibérica (Spanish: Iberian Communist Youth) |
| JCI | Jupiter Communications, Inc. (New York City) |
| JCI | Japan Craft Inspection Organization |
| JCI | Joint Council Initiative |
| JCI | Journal of Community Informatics |
| JCI | Joint Communications Instruction |
| JCI | Jacobson Computers Inc. |
| JCI | Judges Certification Incorporated |