Place · region

Tosa Province

Tosa Province was an old province of Japan on the southern, Pacific coast of Shikoku, corresponding to modern Kōchi Prefecture. Ruled by the Chōsokabe clan, who unified it by 1575, it passed after 1600 to Yamauchi Kazutoyo as the Tosa domain. Its samurai, among them Sakamoto Ryōma, played a major part in the Meiji Restoration.

Tosa Province — Image: Ash_Crow · CC BY 2.5 · Wikimedia Commons

Mentioned in 2 state histories

Chosokabe clan domain Tosa Domain

See also

Cite this entry

APA: The Epoch Institute. (2026). Tosa Province. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/tosa-province
MLA: “Tosa Province.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/tosa-province. Accessed .
Chicago: The Epoch Institute. “Tosa Province.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/tosa-province.
Harvard: The Epoch Institute (2026) ‘Tosa Province’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/tosa-province (Accessed: ).

Last reviewed October 2026Random entry ↻