Which planet has most volcanoes?

• The planet Earth has the most active volcanoes.
• Mars had the largest volcano known in the solar system
• Venus had the most volcanoes.
• Io a moon of Jupiter has the most active volcanoes in the Solar System, with over 400.

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Earth has the most active volcanoes where as Mars has the biggest volcanoe in the universe but the planet which has the most volcanoes would be Venus.

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A difficult question as it depends on whether you include active, inactive or dormant.

Including all of them, then Venus, followed by Earth and then Mars.

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Forgetting planets, then Io a moon of Jupiter is the most active volcanic body in our Solar System with over 400 known active volcanoes.

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Very easy answer . . . Venus has perhaps up to a million volcanoes. For sure it has more than 100,000 volcanoes - we cannot yet tell how many of these are active, or temporarily dormant.