| AAU | Amateur Athletic Union (skr.) |
|---|---|
| ACU | American Church Union |
| ACU | Asian Clearing Union (skr.) |
| ARU | Australian Rugby Union (skr.) |
| ARU | skr. american railway union |
| ASU | American Students Union (skr.) |
| AUU | Adelaide University Union |
| BAIN | sídlo na Réunione |
| BTU | British Trade Union (skr.) |
| BUSHOVÁ | prvá dáma USA, manželka G. Busha juniora (Laura, *1946) |