| SIMI | Italian Society of Internal Medicine 
| Others |
| SIMI | Scandinavian International Management Institute
| Others |
| SIMI | Sea Ice Mechanics Initiative
| Others |
| SIMI | Secondary Initiative For Mathematics Improvement
| Others |
| SIMI | Smallholder Irrigation Markets Initiative
| Others |
| SIMI | Società Italiana di Medicina Interna
| Others |
| SIMI | Society of Irish Motor Industry
| Others |
| SIMI | Society of the Irish Motor Industry
| Others |
| SIMI | Storage Investment Management Inc
| Others |
| SIMI | Student Islamic Movement of India
| Others |
| SIMI | Students Islamic Movement of India
| Others |