| ISDN |
Integrated Services Digital Network |
| ISDP |
Integrated Swamp Development Project |
| ISDR |
Interferon Sensitivity Determining Region |
| ISDR |
International Strategy for Disaster Reduction |
| ISDS |
Information Systems Decision Sciences |
| ISDS |
Individual Sewage Disposal System |
| ISE |
Initial Sensitizing Event |
| ISE |
Integrated Synthesis Environment |
| ISE |
Inter-connected Stock Exchange |
| ISEC |
International Statistical Education Centre |
| ISEE |
International Sun-Earth Explorer |
| iSER |
iSCSI Extensions for RDMA |
| ISES |
International Space Environment Service |
| ISESCO |
"Islamic Educational, Scientific and Cultural Organization" |
| ISF |
Industrial Space Facility |
| ISFP |
Integrated Social Forestry Program |
| ISG |
ISTP Scheduling Group |
| ISGE |
International Society Of Gastroenterology |
| ISH |
Information Super Highway |
| ISH |
Icteric Serum Hepatitis |
| ISI |
Indian Standard Institute |
| ISI |
Inter Service Inteligence |
| ISI |
Increment and Skip on Infinity |
| ISI |
Insulin Sensitivity Index |
| ISI |
Initial Systems Installation |
| ISI |
Instrumentation Support Instruction |
| ISI |
International Standards System Management Award |
| ISI |
Indian Statistical Institute |
| ISI |
Information Sciences Institute |
| ISI |
Inter-Services Intelligence |
| ISI |
Information Services International |
| ISI |
Initial State Interaction |
| ISI |
Independent Science Investigation |
| ISI |
Intensive Supplemental Instruction |
| ISI |
Infortel Systems Incorporated |
| ISIC |
International Standard Industrial Classification |
| ISIL |
Interim Support Items List |
| ISIS |
Integrated Science Instrument System |
| ISIS |
International Satellite for Ionospheric Studies |
| ISIS |
International Species Information System |
| ISKDC |
International Study Of Kidney Diseases In Childhood |
| ISL |
InterScapular Line |
| ISL |
Inertial Systems Laboratory |
| ISLSCP |
International Satellite Land Surface Climatology Project |
| ISM |
Industry Science And Medicine |
| ISM |
International Solidarity Movement |
| ISMLS |
Interim Standard Microwave Landing System |
| ISN |
Intelligent Sensor Network |
| iSNS |
Internet Server Name Service |
| ISO |
International standardisation Organisation |