| GRN | Games Route Network 
| Others |
| GRN | Gene Regulatory Network
| Others |
| GRN | Gene Regulatory Note
| Others |
| GRN | Gene Relation Network
| Others |
| GRN | Generally Recognized as Safe Notification
| Others |
| GRN | Geriatric Resource Nurse
| Others |
| GRN | Glass Reinforced Nylon
| Others |
| GRN | Glen Respectful Nicholls
| Others |
| GRN | Global Radio Network
| Others |
| GRN | Global Radio News
| Others |
| GRN | Global Recordings Network
| Others |
| GRN | Global Recruiters Network
| Others |
| GRN | Global Recycling Network
| Others |
| GRN | Global Refreshment Network
| Others |
| GRN | Global Reservation Network
| Others |
| GRN | Global Response Network
| Others |
| GRN | Global Restoration Network
| Others |
| GRN | Global Router Network
| Others |
| GRN | Good Receipt Note
| Others |
| GRN | Goods Receipt Note
| Others |
| GRN | Goods Receival Note
| Others |
| GRN | Goods receive note
| Others |
| GRN | Goods Received Note
| Others |
| GRN | Goods Received Notes
| Others |
| GRN | Goods Received Number
| Others |
| GRN | Goods Release Note
| Others |
| GRN | Gordon, Nebraska USA
| Others |
| GRN | Gospel Reformation Network
| Others |
| GRN | Governement Radio Network
| Others |
| GRN | Graduate Registered Nurse
| Others |
| GRN | Graduate Research Network
| Others |
| GRN | Grammar Rule Name
| Others |
| GRN | Grape Rootstocks for Nematode
| Others |
| GRN | Greenville and Northern Railway
| Others |
| GRN | Gross Receipts Normalised
| Others |
| GRN | Groundwater Retrieval Network
| Others |
| GRN | GRX graphics library drivers
| Others |
| GRN | Guadalupe Radio Network
| Others |
| GRN | Gulf Restoration Network
| Others |