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Alternative forms[edit]



  1. Abbreviation of care of.
    Anna c/o Bob (“Anna at Bob's address”)
    Send your mail to me c/o Mr. John Smith.
    “But he sent it to you, didn't he?” “No, he sent it to himself c/o me.”
  2. Initialism of certificate of origin, a document used for shipping purposes. Describes country of origin of a given product.

Usage notes[edit]

Care of, usually abbreviated as c/o on envelopes, signifies an intermediary who is responsible for transferring a piece of mail between the postal system and the final addressee. For example when the addressee has no standard address, is under a corporate mail system, or is being manually forwarded mail sent to a more accessible location.

Examples (mailing address)

Mr. John Q. Teacher
c/o Independence High School
1776 Oak Park Ave.
Freedom Heights, IL

Related terms[edit]