Daikan (代官) was an official in ancient Japan that acted on behalf of a ruling monarch or a lord at the post they had been appointed to.
In the Edo period, daikan were local governors in charge of the government and security of domain and shogunate territories.
In the Azuchi-Momoyama period, territorial rulers in charge of local tax collection were called daikan.
The daikan worked from their administrative headquarters (jin'ya) at their territory or their mansion in Edo, under the Commissioner of Finance (kanjō bugyō), and had a dozen of tetsuki and tedai officials under their service.
[citation needed] On the other hand, other daikan gained a great reputation, such as Suzuki Shigenari, who continued to appeal to the shogunate for a reduction or exemption of annual taxation at the cost of his own life in order to save the people of the domain from heavy taxes, and Ido Masaaki, who also saved the people from famine by introducing ganzo to the territories under his control.