| JEC | Jackson Electric Coop 
| Others |
| JEC | Jaguar Education Connection
| Others |
| JEC | Jaguar Enthusiastic Club
| Others |
| JEC | Jaguar Enthusiasts Club
| Others |
| JEC | Japanese Executive Committee
| Others |
| JEC | Jardine Engineering Corporation
| Others |
| JEC | Java Exchange Connector
| Others |
| JEC | Jazan Economic City
| Others |
| JEC | Jefferson Energy
| Others |
| JEC | Jefferson Energy Cooperative
| Others |
| JEC | Jewish Education Center
| Others |
| JEC | Jewish Educational Center
| Others |
| JEC | Jewish Enrichment Center
| Others |
| JEC | Jewish Experience Center
| Others |
| JEC | Jholachap Engineering College
| Others |
| JEC | Job Evaluation Classification
| Others |
| JEC | Joint Economic Committee
| Others |
| JEC | Joint Elections Commission
| Others |
| JEC | Joint Engineers Conference
| Others |
| JEC | Joint Equal Contribution
| Others |
| JEC | Joint Events Council
| Others |
| JEC | Jonathan Education Center
| Others |
| JEC | Jonsson Engineering Center
| Others |
| JEC | Jorhat Engineering College
| Others |
| JEC | Journal of Educational Change
| Others |
| JEC | Journal of Employment Counseling
| Others |
| JEC | Judicial Education Center
| Others |
| JEC | Judicial Evaluation Committee
| Others |
| JEC | Judiciary and Ethics Committee
| Others |
| JEC | Junior Enlisted Council
| Others |
| JEC | Junta Electoral Central
| Others |
| JEC | Justice Equality and Community
| Others |
| JEC | Justice Excellence Courage
| Others |