Map of Japanese provinces (1868) with Hizen Province highlighted
Hizen (肥前国; Hizen no kuni) was an old province of Japan which bordered on Chikuzen and Chikugo. It was included in Saikaidō, and today the area is split into Saga and Nagasaki prefectures, although it did not include the regions of Tsushima and Iki that are now in Nagasaki.