Cethegus may refer to:
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''Cethegus'' (spider), a spider genus
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Cornelii Cethegi
The gens Cornelia was one of the greatest patrician houses at ancient Rome. For more than seven hundred years, from the early decades of the Republic to the third century AD, the Cornelii produced more eminent statesmen and generals than any othe ...
, an ancient Roman family
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Rufius Petronius Nicomachus Cethegus
Rufius Petronius Nicomachus Cethegus was a politician of Ostrogothic Italy and the Eastern Roman Empire. He was appointed consul for 504 AD, and held the post without a colleague. His father was Petronius Probinus, the consul for 489 and prominent ...
, Roman senator
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