| Acronym | Definition |
|---|
| GRN | Green |
| GRN | Green (Political) Party |
| GRN | Glass Reinforced Nylon |
| GRN | Global Recycling Network |
| GRN | Gene Regulatory Network (biology) |
| GRN | Global Recruiters Network (various locations) |
| GRN | Grammar Rule Name |
| GRN | Gulf Restoration Network (New Orleans, LA) |
| GRN | Gamma Ray Neutron Log |
| GRN | Gendai Reiki Network (Japan) |
| GRN | Goods Received Note |
| GRN | Global Research Network |
| GRN | Global Reference Network (GPS) |
| GRN | Gordon, Nebraska (airport code) |
| GRN | Gulf Region North (USACE) |
| GRN | Gospel Recordings Network |
| GRN | Transit Guarantee Number (EU) |
| GRN | Gaussian Relay Network |