Tateyama is a city located in Chiba Prefecture, Japan. As of 1 November 2020, the city had an estimated population of 44,865 in 20,558 households and a population density of 410 persons per km2. The total area of the city is 110.05 square kilometres (42.49 sq mi).

Awa Province was a province of Japan in the area of modern Chiba Prefecture. It lies on the tip of the Bōsō Peninsula (房総半島), whose name takes its first kanji from the name of Awa Province and its second from Kazusa and Shimōsa Provinces. Its abbreviated form name was Bōshū (房州) or Anshū (安州). Awa Province in Shikoku phonetically has the same name, but is written with different kanji (阿波国). Awa is classified as one of the provinces of the Tōkaidō. Under the Engishiki classification system, Awa was ranked as a "middle country" (中国) and a "far country" (遠国).