MRBA
MRBA can refer to a regional basketball league in Australia, a local business association around Mount Rainier, or various river‑focused and market‑research groups, depending on the community or governmental setting.
Community
Market Research Benevolent Association
Missisquoi River Basin Association
Mount Rainier Business Association
Missouri River Bluffs Association
Minnesota River Builders Association
Mississippi Road Builders Association
Michigan Road Builders Association