| ISMB | Indian Standard Medium-weight Beam 
| Others |
| ISMB | Inspectoratul Scolar al Municipiului Bucuresti
| Others |
| ISMB | Institute of Structural and Molecular Biology
| Others |
| ISMB | Institute of Structural Molecular Biology
| Others |
| ISMB | Intelligent Systems for Molecular Biology
| Others |
| ISMB | Intelligent Systems in Molecular Biology
| Others |
| ISMB | International Society for Matrix Biology
| Others |
| ISMB | International Sports Management and Business
| Others |
| ISMB | International Symposium on Molecular Beams
| Others |
| ISMB | Istituto Superiore Mario Boella
| Others |