Nippon Sangoku (日本三國, "Japan: Three Kingdoms") is a Japanese manga series written and illustrated by Ikka Matsuki.

It began serialization on Shogakukan's Ura Sunday website and MangaONE app in November 2021.

Written and illustrated by Ikka Matsuki, Nippon Sangoku began serialization on Shogakukan's Ura Sunday website and MangaONE app on November 24, 2021.

[4] The series was nominated for the eighth Next Manga Awards in 2022 in the web category and was ranked 17th out of 50 nominees.

[11] The series was ranked 12th, alongside Fool Night and Kujima Utaeba Ie Hororo, in the 2023 edition of Takarajimasha's Kono Manga ga Sugoi!