Tharsis is a Volcanic Plateau on Mars, sometimes called the Tharsis Bulge; the name is a greco-roman transliteration of the biblical Tarshish.

Tharsis may also refer to:

• Tharsis railway line, a former industrial railway in Spain
• Tharsis Sulphur and Copper Company Limited, a former British mining company that operated in Spain

• Tharsis (video game), a 2016 strategy video game developed by Choice Provisions
• Reges Tharsis, a Latin motet and antiphon title

This disambiguation page lists articles associated with the title Tharsis.
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