Kairou was a Third Era barony on the western coast of Hammerfell, in the Iliac Bay region. It was bordered by Pothago to the north, Myrkwasa and the Alik'r Desert to the east, and Abibon-Gora to the south. Its capital was the city of Kairou.
Kairou was the scene of a special event called Chil'a. It was the blessing of the new year in the barony and it was both a sacred day and a festival. The archpriest and the baroness each consecrated the ashes of the old year in solemn ceremony, then street parades, balls, and tournaments concluded the event.