| HADES | January 13, 2022 | — | Falcon 9 |
| Hades-D | November 11, 2023 | — | Falcon 9 |
| Hades-ICM | March 15, 2025 | — | Falcon 9 Block 5 |
| Hades-R | January 14, 2025 | — | Falcon 9 |
| Hagoromo | January 24, 1990 | — | M-3S2 |
| Haiyang 1A | May 15, 2002 | — | Long March 4B |
| Haiyang 1B | April 11, 2007 | — | Long March 2C |
| Haiyang 2A | August 15, 2011 | — | Long March 4B |
| Haiyang 2B | October 24, 2018 | — | Long March 4B |
| Haiyang 2C | September 21, 2020 | — | Long March 4B |
| Haiyang 2D | May 19, 2021 | — | Long March 4B |
Hakucho | February 21, 1979 | — | M-3C |
Hakuto-R M1 | December 11, 2022 | ispace Inc | Falcon 9 Block 5 |
Hakuto-R M2 | January 15, 2025 | ispace Inc | Falcon 9 Block 5 |
HALCA | February 12, 1997 | Institute of Space and Astronautical Science | M-V |
| HaloSat | May 21, 2018 | — | Antares |
| HAMSAT | May 5, 2005 | — | Polar Satellite Launch Vehicle |
Hard X-ray Modulation Telescope | June 15, 2017 | — | Long March 4B |
| Hatef-1 | January 28, 2024 | — | Simorgh |
| HAVELSAT | April 18, 2017 | — | Atlas V 401 |
Haven-1 | 2027 | — | Falcon 9 Block 5 |
| Haven-Demo | November 2, 2025 | Vast | Falcon 9 Block 5 |
| HAWK-2A | January 24, 2021 | — | Falcon 9 Block 5 |
| HawkSat I | May 19, 2009 | — | Minotaur I |
Hayabusa | May 9, 2003 | Japan Aerospace Exploration Agency | M-V |
Hayabusa2 | December 3, 2014 | Japan Aerospace Exploration Agency | H-IIA |
Hayasat-1 | December 1, 2023 | Bazoomq | Falcon 9 |
| Hayato | May 20, 2010 | Kagoshima University | H-IIA |
| Hayato-2 | February 27, 2014 | Kagoshima University | H-IIA |
| Healthsat-2 | September 26, 1993 | — | Ariane 40 |
Heat Capacity Mapping Mission | April 26, 1978 | — | Scout D-1 |
| Heinrich Hertz | July 5, 2023 | German Aerospace Center | Ariane 5 ECA |
Helios 1 | December 10, 1974 | — | Titan IIIE |
Helios 2 | January 15, 1976 | — | Titan IIIE |
| Hellas Sat 2 | May 13, 2003 | — | Atlas V 401 |
| Hellas Sat 3 | June 28, 2017 | Hellas Sat, Inmarsat | Ariane 5 ECA |
| Hellas Sat 4 | February 5, 2019 | King Abdulaziz City for Science and Technology, Hellas Sat | Ariane 5 ECA |
HEOS 1 | December 5, 1968 | — | Thor-Delta |
| HEOS 2 | January 31, 1972 | — | Delta L |
Hera | October 7, 2024 | European Space Agency | Falcon 9 Block 5 |
| Hermes | March 4, 2011 | Colorado Space Grant Consortium | Minotaur-C 3110 |
Herschel Space Observatory | May 14, 2009 | European Space Operations Centre, European Space Astronomy Centre | Ariane 5 ECA |
HEXAGON SV-17 | May 11, 1982 | United States Air Force | Titan IIID |
HEXAGON SV-18 | June 20, 1983 | United States Air Force | Titan 34D |
HEXAGON SV-19 | June 25, 1984 | United States Air Force | Titan 34D |
| Hibari | November 9, 2021 | — | Epsilon |
High Energy Astronomy Observatory 1 | August 12, 1977 | — | Atlas-Centaur |
High Energy Astronomy Observatory 3 | September 20, 1979 | — | Atlas-Centaur |
High Energy Transient Explorer 1 | November 4, 1996 | — | Pegasus-XL |
High Energy Transient Explorer 2 | October 9, 2000 | National Aeronautics and Space Administration | Pegasus-H |
| HILAT | June 27, 1983 | — | Scout D-1 |
Himawari 1 | July 14, 1977 | National Space Development Agency, Japan Meteorological Agency | Delta 2000 |
| Himawari 2 | August 10, 1981 | National Space Development Agency, Japan Meteorological Agency | N-II |
| Himawari 3 | August 2, 1984 | Japan Meteorological Agency, National Space Development Agency | N-II |
| Himawari 3 AKM | August 2, 1984 | — | N-II |
| Himawari 4 | September 5, 1989 | Japan Meteorological Agency, National Space Development Agency | H-I |
| Himawari 5 | March 18, 1995 | National Space Development Agency, Japan Meteorological Agency | H-II |
Himawari 8 | October 7, 2014 | Japan Civil Aviation Bureau, Japan Meteorological Agency | H-IIA |
Himawari 9 | November 2, 2016 | Japan Meteorological Agency, Japan Civil Aviation Bureau | H-IIA |
| HiNCube | November 21, 2013 | — | Dnepr |
Hinode | September 22, 2006 | Japan Aerospace Exploration Agency | M-V |
| Hinotori | February 21, 1981 | Institute of Space and Astronautical Science | M-3S |
Hipparcos | August 8, 1989 | European Space Agency | Ariane 44LP |
Hisaki | September 14, 2013 | Japan Aerospace Exploration Agency | Epsilon |
| Hiscock Radiation Belt Explorer | October 28, 2011 | Montana Space Grant Consortium, Montana State University | Delta II |
| Hispasat 136W-1 | September 18, 2002 | Hispasat | Atlas IIAS |
| Hispasat 1A | September 10, 1992 | Hispasat | Ariane 44LP |
| Hispasat 1B | July 22, 1993 | — | Ariane 44L |
| Hispasat 1E | December 29, 2010 | — | Ariane 5 ECA |
| Hispasat 30W-6 | March 6, 2018 | Hispasat | Falcon 9 Full Thrust |
| Hispasat 36W-1 | January 28, 2017 | Airbus Defence and Space, Hispasat | Soyuz-2.1b |
| Hispasat 74W-1 | March 22, 2014 | — | Ariane 5 ECA |
| Hispasat 84W-1 | February 3, 2000 | Hispasat | Atlas IIAS |
| Hitch Hiker 3 | December 21, 1963 | — | Thor-Agena D |
| Hitchhiker 1 | June 27, 1963 | — | Thor-Agena D |
| Hitchhiker 2 | August 14, 1964 | United States Air Force | Atlas SLV-3 Agena-D |
HITEN | January 24, 1990 | Institute of Space and Astronautical Science | M-3S2 |
Hitomi | February 17, 2016 | Goddard Space Flight Center, Institute of Space and Astronautical Science | H-IIA |
| HITSat | September 22, 2006 | — | M-V |
Hodoyoshi 1 | November 6, 2014 | — | Dnepr |
| Hodoyoshi 2 | January 18, 2019 | — | Epsilon |
Hodoyoshi 3 | June 19, 2014 | — | Dnepr |
Hodoyoshi 4 | June 19, 2014 | — | Dnepr |
| HOMS | August 1, 1975 | — | Diamant |
| Hongyan 1 | December 29, 2018 | — | Long March 2D |
| Hongyun 1 | December 21, 2018 | — | Long March 11 |
| Horizons 1 | October 1, 2003 | — | Zenit-3SL |
| Horizons 3e | September 25, 2018 | SKY Perfect JSAT Holdings, Intelsat | Ariane 5 ECA |
| Horizons-2 | December 21, 2007 | Intelsat | Ariane 5GS |
| Horyu 2 | May 17, 2012 | Kyushu Institute of Technology | H-IIA |
| Hot Bird 13E | March 11, 2006 | Eutelsat | Ariane 5 ECA |
| Hot Bird 7 | December 11, 2002 | Eutelsat | Ariane 5 ECA |
| Hotbird 1 | March 28, 1995 | Eutelsat | Ariane 44LP |
| Hotbird 13F | October 15, 2022 | Eutelsat | Falcon 9 Block 5 |
| Hotbird 13G | November 3, 2022 | Eutelsat | Falcon 9 Block 5 |
HTV-1 | September 10, 2009 | Japan Aerospace Exploration Agency | H-IIB |
HTV-X1 | October 26, 2025 | Japan Aerospace Exploration Agency | H3 Launch Vehicle |
| Huanjing 1A | September 6, 2008 | — | Long March 2C |
| Huanjing 1B | September 6, 2008 | — | Long March 2C |
| Huanjing 1C | November 18, 2012 | — | Long March 2C |
Hubble Space Telescope | April 24, 1990 | Goddard Space Flight Center, Space Telescope Science Institute | Space Shuttle |
| HUCSat | April 11, 2026 | Harvard University | Falcon 9 Block 5 |
Humanity Star | January 21, 2018 | — | Electron |
| HumSat-D | November 21, 2013 | — | Dnepr |
| Huoju 1-01 | December 9, 2022 | Rocket Pi | Jielong-3 |
| HuskySat-1 | November 2, 2019 | — | Antares |
Huygens | October 15, 1997 | European Space Operations Centre | Titan IV |
| HYFLEX | February 11, 1996 | National Space Development Agency | J-I |
| HYLAS 2 | August 2, 2012 | Avanti Communications | Ariane 5 ECA |
| HYLAS-1 | November 26, 2010 | Avanti Communications | Ariane 5 ECA |
| HYLAS-4 | April 5, 2018 | Avanti Communications | Ariane 5 ECA |
HysIS | November 29, 2018 | Indian Space Research Organisation | Polar Satellite Launch Vehicle-CA |
Hélios 1A | July 7, 1995 | Direction générale de l'Armement | Ariane 40 |
| Hélios 1B | December 3, 1999 | Direction générale de l'Armement | Ariane 40 |
| Hélios 2A | December 18, 2004 | Direction générale de l'Armement | Ariane 5G+ |
| Hélios 2B | December 18, 2009 | Direction générale de l'Armement | Ariane 5GS |