Matsudaira Mitsumichi (松平 光通, 10 June 1636 – 29 April 1674) was an early to mid-Edo period Japanese samurai, and the 4th daimyō of Fukui Domain.

During this period, and due to his youth, domainal affairs were overseen by senior retainers such as Honda Tomimasa, who had served the clan since the days of Yūki Hideyasu.

Mitsumichi was famous as a wise lord, and enacted many legal codes which helped improve his domain's foundation and its economy, including rules for retainers on promotion of the martial arts and the maintenance of weapons.

Kunihime was a noted waka poet, and had been sought after in marriage by the kuge nobles of Kyoto; however, there was political opposition by the shogunate, which was leery of possible collusion between the two powerful Matsudaira domains.

Kunihime had two daughters (both of whom died in infancy), and although relations with Mitsumichi were apparently good, there was tremendous pressure to produce a male heir.