Zethus may refer to:
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Zethus, the husband of the nymph Thebe in Greek mythology
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Zethus (wasp), a genus of potter wasps
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Zethus (crater)
Zethus is a large crater on Jupiter's natural satellite, moon Thebe (moon), Thebe. The crater is named after Amphion and Zethus, Zethus, the husband of the nymph Thebe (Greek myth), Thebe in Greek mythology, and is the only named surface feature o ...
, a crater on Jupiter's moon Thebe
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