| Acronym | Definition |
|---|
| JCO➣Journal of Clinical Oncology |
| JCO➣Junior Commissioned Officer (India) |
| JCO➣Java Connector (SAP) |
| JCO➣Juvenile Correctional Officer |
| JCO➣Joyce Carol Oates |
| JCO➣Journal of Clinical Orthodontics |
| JCO➣Journal of Combinatorial Optimization |
| JCO➣Juvenile Court Officer |
| JCO➣Journal on Control and Optimization |
| JCO➣JavaCommunity.Org |
| JCO➣Joint Certification Office |
| JCO➣Justification for Continued Operation |
| JCO➣Just Cause Oakland |
| JCO➣Job Change Order (work order) |
| JCO➣J-Body Club of Ontario |
| JCO➣Jim Carrey Online |
| JCO➣Jamaican Caves Organization |
| JCO➣Joint Commission Observer |
| JCO➣Joyello e la sua Cheesy Orchestra |
| JCO➣Jet City Orange |
| JCO➣Joint Cockpit Office |
| JCO➣Joint Cockpit Office (US DoD) |
| JCO➣John C. Otto Company, Inc. |
| JCO➣Java CORBA Object (Oracle) |
| JCO➣James Creek Outfitters |
| JCO➣Judo-Club Obernburg (Germany) |
| JCO➣Japanese Commissioners' Office |
| JCO➣Japan Nuclear Fuels Conversion Company |
| JCO➣Joy Community Outreach |
| JCO➣Johnson County Office (Iowa) |
| JCO➣Joint Construction Office |
| JCO➣Judo Club Osny (French martial arts school; Osny, France) |
| JCO➣Jamey Cicalese Online |
| JCO➣Johnson County Orthopedics and Sports Medicine, PA |