| GRB | Austin Straubel International Airport, Green Bay, Wisconsin USA 
| Others |
| GRB | G Ray Bodley
| Others |
| GRB | Game Rating Board
| Others |
| GRB | Gamma Ray Blast
| Others |
| GRB | Gamma Ray Burst
| Others |
| GRB | Gamma Ray Bursts
| Others |
| GRB | Gary R Benz
| Others |
| GRB | Gender Responsive Budget
| Others |
| GRB | Gender Responsive Budgeting
| Others |
| GRB | General Purpose Rename Buffer
| Others |
| GRB | Genesee Regional Bank
| Others |
| GRB | George R Brown
| Others |
| GRB | Ghana Refugee Board
| Others |
| GRB | Git Remote Branch
| Others |
| GRB | Global Relationship Banking
| Others |
| GRB | Global Resource Bank
| Others |
| GRB | Golden Road Brewery
| Others |
| GRB | Google Rank Brain
| Others |
| GRB | Goose Rocks Beach
| Others |
| GRB | Gospel Radio Blessed
| Others |
| GRB | Gossip Retransmit Bit
| Others |
| GRB | Government Research Bureau
| Others |
| GRB | Government Retirement and Benefits
| Others |
| GRB | Governmental Regulatory Body
| Others |
| GRB | GPU Rigid Body
| Others |
| GRB | Graduate Recruitment Bureau
| Others |
| GRB | Graduated Retirement Benefit
| Others |
| GRB | Grand Rapids Ballet
| Others |
| GRB | Grebo
| Others |
| GRB | Greg Reinhard Baseball
| Others |
| GRB | Grievance Review Board
| Others |
| GRB | GROB Graphic Object Bitmap graphics B&W binary
| Others |
| GRB | Growing Rural Businesses
| Others |
| GRB | Guenzi Read Breidenbach
| Others |
| GRB | Guyana Rice Board
| Others |
| GRB | Ms-DOS Shell Monitor file (MS-DOS 5)
| Others |