| ISBT | Integrated Science Business and Technology 
| Others |
| ISBT | Inter State Bus Terminal
| Others |
| ISBT | Inter State Bus Terminals
| Others |
| ISBT | Inter State Bus Terminus
| Others |
| ISBT | Inter-State Bus Terminal
| Others |
| ISBT | International School Of Bowen Therapy
| Others |
| ISBT | International Society Blood Transfusion
| Others |
| ISBT | International Society for Biological Therapy
| Others |
| ISBT | International Society for Blood Transfusion
| Others |
| ISBT | International Society for Blood Transfusions
| Others |
| ISBT | International Society of Beverage Technologists
| Others |
| ISBT | International Society of Blood Transfusion
| Others |
| ISBT | International Student Badminton Tournament
| Others |
| ISBT | International Students Badminton Tournament
| Others |
| ISBT | Iowa State Bank & Trust Company
| Others |