Cellarius may refer to:

Surname

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Cellarius is the Latin form of cellarer, an office within a medieval Benedictine abbey.

As a surname it is usually a Latinized form of the German name Keller. Notable people with the surname include:

Other

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  • 12618 Cellarius, a minor planet named after Andreas Cellarius
  • Cellarius, a pseudonym used by Samuel Butler in his 1863 letter Darwin among the Machines