| Acronym | Definition |
|---|
| IDL | Idle (assembly language directive) |
| IDL | Interface Definition Language (CORBA) |
| IDL | Idler |
| IDL | Interactive Data Language |
| IDL | Intermediate Density Lipoprotein |
| IDL | Interface Description Language |
| IDL | Interactive Distance Learning |
| IDL | Iowa Digital Library (University of Iowa) |
| IDL | Instrument Detection Limit |
| IDL | Interface Definition Language |
| IDL | Identifier List |
| IDL | Immediately Dangerous to Life |
| IDL | International Date Line |
| IDL | Instructional Design and Learning |
| IDL | Indirect Labor |
| IDL | Import Drug License (China) |
| IDL | Independent and Distance Learning (various locations) |
| IDL | International Driving License |
| IDL | Infectious Diseases Laboratory (various locations) |
| IDL | Integrated Digital Library |
| IDL | Interface Design Language |
| IDL | Idlewild Airport Code (New York International Airport, former Name of JFK Airport) |
| IDL | International Distance Learning (various schools) |
| IDL | Inmate Day Labor |
| IDL | Implement Driveline (machinery) |
| IDL | Interoperable Data Link |
| IDL | Inter-chip Digital Link (Motorola) |
| IDL | Index to Dental Literature |
| IDL | Infectious Diseases of Livestock |
| IDL | Input Data Line |
| IDL | Infantry Division, Light |
| IDL | Image Display Language |
| IDL | Internet Definition Language |
| IDL | Inter Layer Dielectric |
| IDL | Interactive Development Language |
| IDL | Indentured Drawing List |
| IDL | Interim Data Link |
| IDL | Interconnect Description Language |
| IDL | Intermodal Distribution Lane |
| IDL | Interfacility Data Link |
| IDL | Interference Detection and Location technology |
| IDL | Intelligent Definition Language |
| IDL | Intelligent Database Language |