| IOC |
Inter-Organizational Council |
| IOC |
Incident Operations Center |
| IOC |
In-Orbit Checkout And Calibration |
| IOC |
Intergovernmental Oceanographic Commission |
| IOCA |
In Ovo Carcinogenicity Assay |
| IOCA |
Indira Priyadarshini Vriksha Mitra award |
| IOCC |
WHO Inter-Organization Coordinating Committee |
| IOCCP |
International Ocean Carbon Coordination project |
| IOCL |
Inter-satellite Optical Communications Line |
| IOCM |
Interim Operational Contamination Monitor |
| IOCOM |
Indian Ocean Commonwealth |
| IOCR |
Institute of Oil Crops Research |
| IOCT |
Indoor Obstacle Course Test |
| IODC |
Input/Output-Dependent Code |
| IODE |
International Oceanographic Data and Information Exchange |
| IODR |
Input/Output Data Register |
| IODR |
Intra-Ocular Dexterity Robot |
| IODV |
IntraOsseous DiVerticula |
| IOF |
Indian Ordnance Factory |
| IOFB |
Intraocular foreign body |
| IOI |
International Ocean Institute |
| IOL |
IntraOcular Lens |
| IOM |
International organisation for Migration |
| IOM |
International Organization for Migration |
| IONS |
Studies of the Ionization States of Solar and Galactic Cosmic Ray |
| IOP |
Intra Ocular Pressure |
| IOP |
Integrated Occupational Program |
| IOP |
Integrated Operation Plan |
| IOPL |
Integrated Open Problem List |
| IOR |
Indian Ocean Rim |
| IOR |
Inspector Of Record |
| IOS |
Indian Ocean Station |
| IOS |
Indian Ocean Ship |
| IOS |
Indian Ocean STDN Site |
| IOS |
Instructor Operator Station |
| IOS |
Integrated Observing Systems |
| IOSCO |
International Organisation of Securities Commission |
| IOSS |
Institute of Sikh Studies |
| IOT |
Indoor Obstacle Test |
| IOTA |
Infrared-Optical Telescope Array |
| IOTA |
International Occultation Timing Association |
| IOTHAL |
Iothalamate Sodium |
| IOTHAL MEG |
Iothalamate Meglumine |
| IOTT |
Input-Output Transactions Table |
| IOU |
I owe you |
| IOU |
Intensive therapy Observation Unit |
| IOXAG |
Ioxaglate Sodium |
| IOXAG MEG |
Ioxaglate Meglumine |
| IP |
Instructional Pointer |
| IP |
Internet Protocol |