Mars, unmanned spacecraft
| spacecraft | country | launch date | notes |
| Marsnik 1 | USSR | Oct 10, 1960 | Attempted flyby; launch failure |
| Marsnik 2 | USSR | Oct 14, 1960 | Attempted flyby; launch failure |
| Sputnik 22 | USSR | Oct 24, 1962 | Attempted flyby |
| Mars 1 | USSR | Nov 1, 1962 | Flyby; contact lost |
| Sputnik 24 | USSR | Nov 4, 1962 | Attempted lander |
| Mariner 3 | USA | Nov 5, 1964 | Attempted flyby |
| Mariner 4 | USA | Nov 28, 1964 | Flyby |
| Zond 2 | USSR | Nov 30, 1964 | Flyby; contact lost |
| Mariner 6 | USA | Feb 24, 1969 | Flyby |
| Mariner 7 | USA | Mar 27, 1969 | Flyby |
| Mars 1969A | USSR | Mar 27, 1969 | Attempted orbiter; launch failure |
| Mars 1969B | USSR | Apr 2, 1969 | Attempted orbiter; launch failure |
| Mariner 8 | USA | May. 8, 1971 | Attempted flyby; launch failure |
| Cosmos 419 | USSR | May 10, 1971 | Attempted orbiter/lander |
| Mars 2 | USSR | May 19, 1971 | Orbiter/attempted lander |
| Mars 3 | USSR | May 28, 1971 | Orbiter/lander |
| Mariner 9 | USA | May 30, 1971 | Orbiter |
| Mars 4 | USSR | Jul 21, 1973 | Flyby/attempted orbiter |
| Mars 5 | USSR | Jul 25, 1973 | Orbiter |
| Mars 6 | USSR | Aug 5, 1973 | Lander; contact lost |
| Mars 7 | USSR | Aug 9, 1973 | Flyby/attempted lander |
| Viking 1 | USA | Aug 20, 1973 | Orbiter and lander |
| Viking 2 | USA | Sep 9, 1975 | Orbiter and lander |
| Fobos 1 | USSR | Jul 7, 1988 | Attempted orbit and Phobos landers |
| Fobos 2 | USSR | Jul 12, 1988 | Orbiter/attempted Phobos landers |
| Mars Observer | USA | Sep 25, 1992 | Attempted orbiter; contact lost |
| Mars Global Surveyor | USA | Nov 7, 1996 | Orbiter |
| Mars 96 | Russia | Nov 16, 1996 | Attempted orbiter and landers |
| Mars Pathfinder | USA | Dec 4, 1996 | Lander and rover |
| Nozomi | Japan | Jul 3, 1998 | Attempted orbiter |
| Mars Climate Observer | USA | Dec 11, 1998 | Attempted orbiter |
| Mars Polar Lander | USA | Jan 3, 1999 | Attempted lander and penetrators |
| Mars Odyssey | USA | Apr 7, 2001 | Orbiter |
| Mars Express and Beagle 2 | Europe/UK | Jun 2, 2003 | Orbiter and attempted lander |
| Mars Exploration
Rover, Spirit |
USA | Jun 10, 2003 | Lander and rover |
| Mars Exploration
Rover, Opportunity |
USA | Jul 7, 2003 | Lander and rover |
| Mars Reconnaissance Orbiter | USA | Aug 12, 2005 | Orbiter |
| Mars Phoenix Lander | USA | Aug 4, 2007 | Lander |
| Mars
Science Laboratory Curiosity rover |
USA | 2012 | Lander and rover |
| InSight | USA | 2016 | Lander |
| ExoMars | Europe | 2016 / 2018 | Orbiter, lander and 2 rovers |
