Cancelled missions to Mars

former media project / scam themed around private spaceflight

planned science mission to Mars featuring semi-hard landing strategy

proposed and subsequently cancelled (unfunded) robotic rover to be sent to planet Mars

now defunct American nonprofit organization

proposed Mars sample return mission

cancelled NASA spaceflight mission in the Mars Exploration Program

cancelled NASA Mars rover concept

Cancelled Mars lander mission

cancelled Canadian Mars lander and rover mission

NASA design reference mission

cancelled NASA space exploration program

Martian astrobiology mission proposal

cancelled series of uncrewed NASA probes to the planet Mars

In 2007–2009, CNES (French Space Agency) and ESA (European Space Agency) had planned to send a remote sensing orbiter and four small Netlanders to Mars. They planned to land them in four locations. The CNES and ESA cancelled this mission because it was too expensive; both agencies planned to send other orbiters and landers for missions like ExoMars.

The 'ExoMars Kazachok (; formerly ExoMars 2020 Surface Platform') was a planned robotic Mars lander led by Roscosmos, part of the ExoMars 2022 joint mission with the European Space Agency. Kazachok translates as "Little Cossack", and is also the name of an East Slavic folk dance.