A Migyosho (or Mikyosho) was a form of ancient document issued by a Keishi (household superintendant) with a court rank of Jusanmi (Junior Third Rank) or higher used for conveying the intentions of their masters from the late Heian period to the Muromachi period.
御教書（みぎょうしょ、みきょうしょ）とは平安時代後期から室町時代にかけて、従三位以上及びそれに准じる地位にある人の家司が主の意思を奉じて発給した古文書の形態。