Ii ke shiryo

• Japanese: 井伊家史料 (Ii ke shiryô)

The Ii ke shiryô, or Ii Family Documents, are a collection of documents and records from the Ii clan of Hikone han, pertaining in particular to the Bakumatsu and Meiji Restoration eras.

Scholars at the University of Tokyo Historiographical Institute prepared and published transcriptions (honkoku) of these documents beginning in 1959. The 30th and final volume was published in 2019.