| Acronym | Definition |
|---|
| GRB➣Gamma Ray Burst(er) |
| GRB➣General Purpose Rename Buffer |
| GRB➣Graduate Recruitment Bureau |
| GRB➣Gender Responsive Budget (various organizations) |
| GRB➣Graduated Retirement Benefit (UK) |
| GRB➣Grape Root Borer (insect) |
| GRB➣Grid Resource Broker |
| GRB➣Gharb (postal locality, Malta) |
| GRB➣Global Resource Broker |
| GRB➣Global Resource Bank (communal bank) |
| GRB➣Grootschalig Referentiebestand (Dutch: large scale mapping program) |
| GRB➣Green Bay, WI, USA - Austin/Straybel Field (Airport Code) |
| GRB➣G. Ray Bodley (High School) |
| GRB➣Green Red Blue |
| GRB➣Government Retirement & Benefits, Inc. |
| GRB➣General Revenue Bonds |
| GRB➣Globally Responsible Birthing |
| GRB➣Global Relationship Banking |
| GRB➣Granatbuechse (German WWII anti-tank grenade rifle) |
| GRB➣Geophysics Research Board |
| GRB➣Government Reservation Bureau |
| GRB➣Golden Radio Buffs of Maryland (old-time radio) |
| GRB➣Grand Rose Band |
| GRB➣General Radio Broadcast |
| GRB➣Gabriel Richard Building |