| 1985-034B | G-010 |
| 1985-104B | G-308 |
| 2011-012A | Gagarin |
| viz | Galaxy |
| 2003-017A | GALEX |
| 1989-084B | Galileo (družice Jupiteru) |
| 1989-084E | Galileo - JEP (atmosférická sonda Jupiteru) |
| viz | Galileo (navigační družice EK) |
| 1994-002A | Gals 1 |
| 1995-063A | Gals 2 |
| viz | Gambit |
| 1990-058A | Gamma |
| 1976-053A | Gap Filler |
| 2000-011A | Garuda 1 |
| 1985-034B | GAS P/L G-010 |
| 1985-104B | GAS P/L G-308 |
| viz | GATV |
| 1983-056C | GB-1 |
| 1983-056D | GB-2 |
| 1983-056G | GB-3 |
| viz | GE |
| 1995-054A | Gelios |
| viz | Gemini |
| 2006-058C | GeneSat |
| 2001-034A | Genesis (NASA) |
| Genesis (Bigelow Aerospace) | |
| 2008-042A | GeoEye 1 |
| 1994-078A | Geo-IK-1 1 |
| 2011-005A | Geo-IK-2 1 |
| 2001-020A | GeoLITE |
| 1963-026A | Geophysical Research |
| viz | GEOS |
| 1985-021A | Geosat |
| 1992-044A | Geotail |
| 1998-007A | GFO |
| 1986-017JE | GFZ-1 |
| 1996-013A | GGS Polar |
| viz | GGSE |
| 1966-053A | GGTS-1 |
| 1987-012A | Ginga |
| 1985-056A | Giotto |
| viz | GIOVE |
| 2008-029A | GLAST |
| viz | Globalstar |
| 1990-028B | Glomar |
| 1985-104B | GLOMR |
| viz | Glonass |
| viz | GMS |
| 2009-013A | GOCE |
| viz | GOES |
| 1994-069A | GOMS-1 |
| 2011-001A | GOMS-2 |
| viz | Gonec |
| viz | Gorizont |
| 2004-014A | GP-B |
| viz | GPS |
| viz | GRAB |
| 2002-012A | GRACE-1 |
| 2002-012B | GRACE-2 |
| 2011-046A | GRAIL-A |
| 2011-046B | GRAIL-B |
| 1989-096A | Granat |
| 2004-014A | Gravity Probe B |
| viz | Greb |
| 1971-067E | Grid Sphere 7-1 |
| 1971-067H | Grid Sphere 7-1 (AVL-802 Rigid Sphere) |
| 1971-067G | Grid Sphere 7-2 |
| 1991-027B | GRO |
| 1963-026A | GRS |
| 1969-097A | GRS-A |
| 1972-100A | GRS-B |
| 2003-055A | Gruzomaket |
| 2011-011A | Gryphon |
| viz | GSat [=Geostationary Satellite] |
| viz | Gstar |
| 2005-051A | GSTB-V2/A |
| 2008-020A | GSTB-V2/B |
| viz | GT [=Gemini-Titan] |
| 1969-018A | Gumdrop |
| 1998-043D | Gurwin Techsat 1B |
| 2003-055A | GVM KA (Strela-1) |
| 2000-009A | GVMPN |