| Acronym | Definition |
|---|
| MRBA➣Market Research Benevolent Association (UK) |
| MRBA➣Mississippi River Basin Alliance |
| MRBA➣Michigan Road Builders Association |
| MRBA➣Buenos Aires (airport code) |
| MRBA➣Martin's Rose Bengal Agar |
| MRBA➣Macedon Ranges Basketball Association (est. 1985) |
| MRBA➣Montana Rockies Bluegrass Association (Missoula, MT) |
| MRBA➣Mississippi River Bridge Authority (now Crescent City Connection Division; Louisiana) |
| MRBA➣Marshall Ramsey Blogaholics Anonymous |
| MRBA➣Mississippi Road Builders' Association |
| MRBA➣Material Review Board Action |