Kai is a province in Total War: Shogun 2.
- Clan: Takeda Clan
- Port: None
- Fertility: Average
- Specialty/Resource: Warhorses
Home to the Takeda Clan, Kai is a valuable province thanks to its warhorse resource. Kai is the easternmost province to have warhorses, making it a useful target for the Date Clan, Uesugi Clan, and Hojo Clan.
Kai is largely surrounded by impassable mountains, but has an entrance to the north, south, and east.
Kai borders North Shinano to the north, Musashi to the east, Sagami to the southeast, Suruga to the south, and South Shinano to the west, but it only has direct access to North Shinano, Musashi and Suruga thanks to the surrounding mountains.