Matsudaira Tsunamasa

Matsudaira Tsunamasa (松平 綱昌^?, 4 June 1661 – 12 March 1699) was a Japanese daimyō of the early Edo period. He was the head of the Fukui Domain in Echizen Province.

Born in Edo, the eldest son of Matsudaira Masakatsu. He was the illegitimate son of Mitsumichi).

After the succession dispute with his uncle Masachika, the latter resigned, and allowed Tsunamasa to become lord of Fukui. However, Tsunamasa soon proved himself to be a cruel lord prone to violent rampages, and the shogunate confiscated the Fukui domain. Because of the domain's status and its history dating back to Yūki Hideyasu, the shogunate restored the previous lord Masachika to the family headship.

In 1686, the han was reduced from 475,000 koku to 250,000 koku.

Tsunamasa died in 1699, at 38 years of age.

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