Mardonius may refer to:
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Mardonius (nephew of Darius I), Persian commander during the second Persian invasion of Greece
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Mardonius (philosopher), tutor and adviser of Roman emperor Julian (331–363)
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''Mardonius'' (genus), a genus of giant African millipedes
See also
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Operation Mardonius
Operation Mardonius was a military operation directed against German ships in occupied Norway, planned and carried out in 1943 by the British Special Operations Executive (SOE). The outcome of the operation was sinking of two ships in the harbour ...
, a 1943 British military campaign
{{Disambiguation, hndis