| Abbreviation | Definition |
|---|---|
| I&D | Incision and Drainage |
| I&O | Intake and Output |
| I-131 | Radioactive Iodine |
| I-UAL | Internal Ultrasonic Assisted Liposuction |
| I.A.F. | Indian Air Force |
| I.B.A. | Indian Bank Association |
| I.C.D.S. | Integrated Child Development Services |
| I.C.J. | International Court of Justice |
| I.D.R.C. | International Development Research Center |
| I.E.C. | Indian Education Commission |
| I.F.C.I. | Industrial Finance Corporation of India |
| I.G.F. | indian Growth Fund |
| I.G.N.O.U. | Indira Gandhi National Open University |
| I.H.F. | Indian Hockey Federation |
| i.LINK | high speed serial bus (Sony) |
| I.O.A. | Indian Olympic Association |
| I.R.E.D.A. | Indian Renewable Energy Development Agency |
| I.R.N.A. | Islamic Republic News Agency |
| I.S.R.O. | Indian Space Research Organisation |
| I.T. | Information Technology |
| I.T.I. | Industrial Training Institute |
| I/C | Incidental Charges |
| i/c | incharge |
| I2C | Inter - Integrated Circuit |
| I2O | Intelligent I/O |
| IA | Indian Airlines |
| IA | Indian Airlines; Indian Army |
| IA | Insert Attribute |
| IA | Invalid Argument |
| IA | Incurred Accidentally |
| IA | Intra-Arterial |
| IA | Inborn Attributes |
| IA | Impulse Activity |
| IA | Inflow Area |
| IA | Individual Assignment |
| IA | Individual Achievement |
| IA | Instructional Assistant |
| IA | Information Architect |
| IA | Information Archaeologist |
| IA | Independent Agent |
| IA | Implementation Agency |
| IA | International Affairs |
| IA-PC | Intel Architecture Personal Computer |
| IAA | International Aerospace Abstracts |
| IAAF | International Amateur Athletic Federation |
| IAAF | International Amateur Athletics Federation |
| IAAI | International Airports Authority of India |
| IAAI | International Airport Authority of India |
| IAAS | Indian Audit and Accounts Service |
| IAAS | Indian Audit and Accounts Service |