Tokugawa Mitsukuni , also known as Mito Kōmon (水戸黄門), was a Japanese daimyo who was known for his influence in the politics of the early Edo period. He was the third son of Tokugawa Yorifusa and succeeded him, becoming the second daimyo of the Mito Domain.

Mito was a Japanese domain of the Edo period. It was associated with Hitachi Province in modern-day Ibaraki Prefecture.