Circulus may refer to:
*
''Circulus'' (album), 1970, by Chick Corea
*
Circulus (band), a British psychedelic folk and progressive rock band
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''Circulus'' (gastropod), a genus of sea snails
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Circulus (theory), a socioeconomics doctrine
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Circulus (zoology), a type of reptilian social group
See also
*
{{disambiguation