| Integrated Science Program | Academic & Science |
| International Society for Psychophysics | Academic & Science |
| Bhārătīyă Parajīvī Vijñyān Sangh | Academic & Science |
| भारतीय परजीवी विज्ञान संघ | Academic & Science |
| Indian Society for Parasitology | Academic & Science |
| Bha¯ra?ti¯ya? Paraji¯vi¯ Vijn~ya¯n Sangh | Academic & Science |
| Independent Study Program | Academic & Science |
| Integral Somatic Psychology | Academic & Science |
| International School of Paris | Academic & Science |
| Islip (ny) | Airport Code |
| Innovative Service Program | Business |
| Intrinsically Safe for Process | Business |
| Inside Screen Porch | Business |
| Insurance Service Provider | Business |
| Investec Struc | Business |
| International Specialty Products | Business |
| Isolated Soy Protein | Chemistry |
| International School of Panama | Community |
| In-Sessional Program | Community |
| Independent Study Project | Community |
| Information Society Project | Community |
| Individualized Service Plan | Community |
| Invisible Street Photography | Community |
| International Standardized Profile | Computer and Networking |
| Internet Selective Polling | Computer and Networking |
| Internal System Performance | Computer Hardware |
| Instruction Set Processor | Computer Hardware |
| Internet Security Protocol | Computing |
| Information Service Provider | Computing |
| Integrated System Peripheral | Computing |
| Image Synthesis Processor | Computing |
| In Store Processor | Computing |
| Information Services Processor | Computing |
| Intermediate Switching Point | Computing |
| Interactive Serial Programmer | Computing |
| Integrated Standard Processor | Computing |
| Information Storage Professional | Computing |
| Ispolink | Cryptocurrency |
| Image Signal Processor | Electronics |
| Interface Strain Parameter | Electronics |
| Internet Service Provider Settings (ms Iis) | File Type |
| Integrated Service Package | General |
| Industrial Spark Plug | General |
| In System Programmable | General |
| International Studies and Programs | General |
| Iron Sulfur Protein | General |
| In System Programmer | General |
| Inferior Service Provider | General |
| International Student Placements | General |
| International Student Protection | General |
| Industrial Security Professional | General |
| Interactive Screening Program | General |
| In Skill Purchasing | General |
| Information Sources Page | General |
| Intelligent Systems Program | General |
| I Sell Promises | General |
| Integrating Special Populations | General |
| Long Island Mac Arthur Airport | Governmental |
| Infrastructure Service Provider | Governmental |
| Industrial Security Program (Canada) | Governmental |
| International Security Passport | Governmental |
| Instituitional Strengthening Program | Governmental |
| Information Security Program | Governmental |
| Intense supervised probation | Governmental |
| Installation Strategic Plan | Governmental |
| Idaho State Police | Governmental |
| Illinois State Police | Governmental |
| Indiana State Police | Governmental |
| Internet Service Provider | Information Technology |
| ISPanyolca | International |
| International Student | International |
| International Studies Perspectives | International |
| International Schools Partnership | International |
| International Service Provider | International |
| I'm So Prissy | Internet |
| Internet Survey Period | Internet |
| Internet Suckiness Providers | Internet |
| Information Systems Professional | Jobs |
| International Society for Pathophysiology | Medical |
| Isdn Security Program | Military and Defence |
| Institut Supérieur Pédagogique | Regional |
| Long Island MacArthur Airport, Long Island, New York USA | Regional |
| Institutional Strengthening Plan | Regional |
| In System Programming | Softwares |
| Initial Specific Impulse | Space Science |
| Instrumentation Support Plan | Space Science |
| Integrated Support Plan | Space Science |
| Intermediate Start Position | Sports |