| Acronym | Definition |
|---|
| GCO➣Grand Contournement Ouest (French: Great Western Bypass) |
| GCO➣Global Customer Operations |
| GCO➣GeorgiaCarry.org (firearms website) |
| GCO➣Grounded Convenience Outlet (electrical outlet) |
| GCO➣Groupes Coopérateurs en Oncologie (French oncology group) |
| GCO➣Global Compact Office (UN) |
| GCO➣Generator Certification Official (waste) |
| GCO➣Government Communication Office (various locations) |
| GCO➣Georgia Carpet Outlet |
| GCO➣Global Children's Organization (Los Angeles, CA) |
| GCO➣Grand Cube Osaka (Osaka, Japan) |
| GCO➣Grassroots Community Organization |
| GCO➣Google Check Out |
| GCO➣Global Clinical Operations |
| GCO➣Ground Communication Outlet (aviation) |
| GCO➣Green College Online |
| GCO➣Got Cut Off |
| GCO➣Geotechnical Control Office (Hong Kong) |
| GCO➣Global Concept Owner |
| GCO➣General Cash Offer (investments) |
| GCO➣Government Concept of Operations |
| GCO➣Grand Commander |
| GCO➣Golf Course Operator/Owner |
| GCO➣Group Compliance Officer (job title) |
| GCO➣Gun Control Officer |
| GCO➣Garbage Collection Overhead |
| GCO➣Greeley Chamber Orchestra (Greeley, CO) |
| GCO➣Government Contracting Office |
| GCO➣Game Cards Online |