| Indosat Ooredoo (Indosat Ooredoo) |
 Indonesia |
Commercial |
2015 |
0 |
0 |
0 |
| Industral Consortium Astronomical Netherlands Satellite (ICANS) |
 Netherlands |
Commercial |
1966 |
0 |
0 |
0 |
| Infinite Orbits (Infinite Orbits) |
 France |
Commercial |
2017 |
0 |
0 |
0 |
| InFocus, Edgewood, New Mexico (40 Blanco Drive) (InFocus) |
 United States |
Commercial |
2015 |
0 |
0 |
0 |
| Inha University (Inha U.) |
 South Korea |
Academic / research |
1954 |
0 |
0 |
0 |
| Inmarsat (ISAT) |
 United Kingdom |
Commercial |
1979 |
0 |
0 |
0 |
| Innova Space (Innova Space) |
 Argentina |
Commercial |
2019 |
0 |
0 |
0 |
| Innovative Business Solutions Inc. (IBSI) |
United States |
Commercial |
1992 |
0 |
0 |
0 |
| Inovor Technologies (Inovor) |
 Australia |
Commercial |
2012 |
0 |
0 |
0 |
| Insitute for the Dynamics of Geospheres (IDG) |
 Russia |
Government / agency |
1991 |
0 |
0 |
0 |
| Insitute of Medical-Biological Problems (IMBP) |
|
Government / agency |
1963 |
0 |
0 |
0 |
| Inspiration4 (Inspiration4) |
United States |
Commercial |
2021 |
0 |
0 |
0 |
| INSSET (INSSET) |
France |
Academic / research |
1960 |
0 |
0 |
0 |
| Inst.de Investigaciones Cientificas y Tech. de las Fuerzas Armadas (CITEFA) |
Argentina |
Government / agency |
1982 |
0 |
0 |
0 |
| Institut d'Astrophysique Spatiale (IAS), Uni. Paris XI (Orsay-IAS) |
France |
Academic / research |
1960 |
0 |
0 |
0 |
| Institut fur Elektronik (IFE) |
|
Government / agency |
1973 |
0 |
0 |
0 |
| Institut fur Kosmoforschung (IKF) |
|
Government / agency |
1981 |
0 |
0 |
0 |
| Institut fur Physikalische Weltraumforschung (IPW) |
 Germany |
Academic / research |
1973 |
0 |
0 |
0 |
| Institute for Aerospace Research (IIAE) |
Argentina |
Government / agency |
1961 |
0 |
0 |
0 |
| Institute for Applied Geophysics (IAG) |
 China |
Government / agency |
1966 |
0 |
0 |
0 |
| Institute for Precision Instrument Engineering (IPIE) |
|
Government / agency |
1986 |
0 |
0 |
0 |
| Institute for Q-shu Pioneers of Space (iQPS) |
 Japan |
Commercial |
2005 |
0 |
0 |
0 |
| Institute for Space Applications and Remote Sensing (ISARS) |
 Greece |
Government / agency |
|
0 |
0 |
0 |
| Institute for Space Physics (ISP) |
China |
Government / agency |
1980 |
0 |
0 |
0 |
| Institute for Space Studies of Catalonia (IEEC) |
 Spain |
Academic / research |
2020 |
0 |
0 |
0 |
| Institute of Experimental Meteorology (IEM) |
|
Government / agency |
1968 |
0 |
0 |
0 |
| Institute of Image Processing Systems RAS (ISOI RAN) |
Russia |
Academic / research |
1993 |
0 |
0 |
0 |
| Institute of Meteorology and Water Management (IMGW) |
 Poland |
Government / agency |
1973 |
0 |
0 |
0 |
| Institute of Software, Chinese Academy of Sciences (Inst. Software) |
China |
Government / agency |
|
0 |
0 |
0 |
| Institute of Space and Astronautical Science (ISAS) |
Japan |
Government / agency |
|
0 |
0 |
6 |
| Institute of Space Research and Aerospace (ISRA) |
 Sudan |
Government / agency |
2013 |
0 |
0 |
0 |
| Institute of Space Science (Romania) (ISS-Romania) |
 Romania |
Government / agency |
1990 |
0 |
0 |
0 |
| Institute of Technology "Max Valier", Bozen (GO Max Valier) |
 Italy |
Academic / research |
2012 |
0 |
0 |
0 |
| Institute of Technology "Oskar von Miller", Meran (GO Oskar v Miller) |
Italy |
Academic / research |
2012 |
0 |
0 |
0 |
| Instituto de Astrofisica de Andalusia (CSIC) (IAA) |
Spain |
Academic / research |
1975 |
0 |
0 |
0 |
| Instituto Nacional de Técnica Aeroespacial (INTA) |
Spain |
Government / agency |
|
0 |
0 |
0 |
| Instituto Politecnico Nacional (IPN) |
 Mexico |
Academic / research |
1936 |
0 |
0 |
0 |
| Instute for Instrument Building (NII P) |
|
Government / agency |
1963 |
0 |
0 |
0 |
| INSYS Ltd. (Insys Ltd) |
United Kingdom |
Commercial |
2001 |
0 |
0 |
0 |
| International Emerging Technology Company (ETCO) |
 Oman |
Commercial |
2020 |
0 |
0 |
0 |
| International Institute for Aeronautical Sciences (IIAS) |
|
International organisation |
|
0 |
0 |
0 |
| International Launch Services (ILS) |
United States |
Commercial |
1995 |
0 |
0 |
0 |
| International Space Station (ISS) |
|
International organisation |
1988 |
0 |
0 |
0 |
| Internet Think Tank, Inc. (Int.Think Tank) |
United States |
Commercial |
2021 |
0 |
0 |
0 |
| Intersputnik Intl. Org of Space Comms. (Intersputnik) |
|
Government / agency |
1971 |
0 |
0 |
0 |
| Interstellar Communications Holdings Inc. (Interstellar C.) |
United States |
Commercial |
2024 |
0 |
0 |
0 |
| Interstellar Technologies (ISTECH) |
Japan |
Commercial |
2005 |
0 |
0 |
3 |
| Intuidex Inc. (Intuidex) |
United States |
Commercial |
|
0 |
0 |
0 |
