| JCS | Conflation Suite 
| Others |
| JCS | Jackson Christian School
| Others |
| JCS | Jackson City Schools
| Others |
| JCS | Jaguar Club Singapore
| Others |
| JCS | Jaguar Club Sovejag
| Others |
| JCS | Jamaica Civil Service
| Others |
| JCS | Jamaica Computer Society
| Others |
| JCS | Japan Content Showcase
| Others |
| JCS | Japanese Cultural Society
| Others |
| JCS | Jarden Consumer Solutions
| Others |
| JCS | Jasmine Cygne and Sue
| Others |
| JCS | Java Caching System
| Others |
| JCS | Jeep Club Slovakia
| Others |
| JCS | Jeep Club Srbija
| Others |
| JCS | Jeep Club Sweden
| Others |
| JCS | Jeep Club Switzerland
| Others |
| JCS | Jeep Clube Sinop
| Others |
| JCS | Jefferson County Schools
| Others |
| JCS | Jesus Christ Superstar
| Others |
| JCS | Jewish Chautauqua Society
| Others |
| JCS | Jewish Communal Service
| Others |
| JCS | Jewish Community Services
| Others |
| JCS | Joao Catarina Sophie
| Others |
| JCS | Job Connection Services
| Others |
| JCS | Job Control Statement
| Others |
| JCS | Job Cost Summary
| Others |
| JCS | Job Creation Scheme
| Others |
| JCS | Job Cut Survival
| Others |
| JCS | Jockey Club Student
| Others |
| JCS | John Carlo Stefano
| Others |
| JCS | John Clare Society
| Others |
| JCS | Johnson Communications Services, Inc.
| Others |
| JCS | Johnson, Coleman, & Stephenson, Attorneys at Law
| Others |
| JCS | Johnston County School
| Others |
| JCS | Johnston County Schools
| Others |
| JCS | Johnston County SD
| Others |
| JCS | Joint C4ISR System
| Others |
| JCS | Joint Chiefs of Staff
| Others |
| JCS | Joint Combat System
| Others |
| JCS | Joint Communications Support
| Others |
| JCS | Joint Coordinated System
| Others |
| JCS | Joint Country Support
| Others |
| JCS | Jonas Clarke School
| Others |
| JCS | Jordan Computer Society
| Others |
| JCS | Journal of Cell Science
| Others |
| JCS | Journal of Celtic Studies
| Others |
| JCS | Journal of Church and State
| Others |
| JCS | Journal of Classical Studies
| Others |
| JCS | Journal of Computer Security
| Others |
| JCS | Journal of Consciousness Studies
| Others |
| JCS | Journal of Croatian Studies
| Others |
| JCS | Journal of Cuneiform Studies
| Others |
| JCS | Journal of Curriculum Studies
| Others |
| JCS | Json Canonicalization Scheme
| Others |
| JCS | Judicial command staff
| Others |
| JCS | Jukes Coulson Stokes
| Others |
| JCS | Julian Charter School
| Others |
| JCS | Jumper Candidate School
| Others |
| JCS | Jumper for Cable Select
| Others |
| JCS | Jurupa Community Services
| Others |