| IABR | Indiana Association of Beverage Retailers 
| Others |
| IABR | Integrated Algal Bio Refinery
| Others |
| IABR | International Architecture Biennal Rotterdam
| Others |
| IABR | International Architecture Biennale Rotterdam
| Others |
| IABR | International Association for Breath Research
| Others |
| IABR | International Association of Breath Research
| Others |
| IABR | Internationale Architectuur Biennale Rotterdam
| Others |
| IABR | Internet Archive Bookreader
| Others |