| Sign Language Interpreter | Academic & Science |
| Salt Lake Institute of Genealogy | Academic & Science |
| Student Leadership Institute | Academic & Science |
| Space Launch Initiative | Academic & Science |
| Solwezi | Airport Code |
| Southern Lights Incorporated | Business |
| Supplementary Liability Insurance | Business |
| Std Lfe In Pty | Business |
| Shippers Letter of Instruction | Business |
| SLI, Inc. | Business |
| Sri Lanka Insurance | Business |
| Solid Liquid Interface | Chemistry |
| Search Learn Improve | Community |
| Specific Language Impairment | Community |
| Special Language Inability | Community |
| Shared Learning Infrastructure | Community |
| Summer Leadership Institute | Community |
| Suppress Length Indication | Computer Assembly Language |
| Set Link Information | Computer Assembly Language |
| Scan Line Interlace | Computer Hardware |
| Scan Line Interleaving | Computer Hardware |
| System Level Integrator | Computing |
| Shared Library Interposer | Computing |
| Subscriber Line Interface | Computing |
| Serial Lcd Interface | Computing |
| Session Level Interface | Computing |
| Split Level Interface | Computing |
| Scan Leave Interlacing | Computing |
| Magicorp Slide Service Slide | File Type |
| Scan Line Interleave | General |
| System Level Integration | General |
| Scan Line Interleaved | General |
| Street Light Interference | General |
| Scan Line Interweave | General |
| Search Learn And Improve | General |
| Street Lamp Interference | General |
| Starting Lighting and Ignition | General |
| Service Logic Interpreter | General |
| Sustainable Land Imaging | General |
| sausage Album on Imgur | General |
| Service Level Indicator | General |
| Serial Link Interface | General |
| Scaleable Link Interface | General |
| Speed Limit Information | General |
| Super Luxury Interior | General |
| Speed Limit Indication | General |
| Sustainable Living Innovations | General |
| Scholars Latino Initiative | General |
| Starting Lighting Ignition | General |
| Servant Leader Intern | General |
| Summer Language Institutes | Governmental |
| Strategic Language Institute | Governmental |
| SANGLI | Indian Railway Station |
| Scalable Link Interface | Information Technology |
| Supplemental Liability Insurance | Insurance |
| Solar Lighting International | International |
| Student Life Instructor | Jobs |
| Sporadic Language Impairment | Medical |
| Secretin-Like Immunoreactivity | Medical |
| Selective Lymphoid Irradiation | Medical |
| Serotonin-Like Immunoreactivity | Medical |
| Somatostatin-Like Immunoreactivity | Medical |
| Specific Learning Incident | Medical |
| Splenic Localisation Index | Medical |
| Science Laboratories Infrastructure | Medical |
| Strategic List Item | Military and Defence |
| Los Alamitos Army Airfield, Los Alamitos, California USA | Regional |
| Erno Spacelab Integration and Test | Space Science |
| Sports Legacy Institute | Sports |
| Safe Load Indicator | Technology |
| Solwezi Airport | Transport & Travel |
| Sangli Railway Station | Transport & Travel |
