Inaba Province

Overview

Inaba Province (因幡国, Inaba no Kuni) was a former province of Japan, corresponding to the eastern half of what is now Tottori Prefecture in the San'in region. The province sat on the coast of the Sea of Japan and was bordered by Hōki, Mimasaka, Harima, and Tajima Provinces. Its abbreviated form name was Inshū (因州).

Under the Gokishichidō system, Inaba belonged to the San'indo circuit, one of the seven administrative circuits that divided the country. In the Engishiki classification, compiled in the early tenth century, Inaba was ranked among the 35 "superior countries" (上国, jōkoku) in terms of importance, and as one of the "near countries" (近国, kingoku) in terms of distance from the capital. The provincial capital stood in what is now the city of Tottori. The province's ichinomiya, or highest-ranked shrine, was Ube Shrine, also located in the city of Tottori.

History

Inaba Province was established during the early Ritsuryō state reforms of the late seventh century, when the central government reorganised regional administration into a system of provinces and districts. The province took its place within the San'indo circuit, a term that literally means "mountain's back road," reflecting its position along the northern coast of Honshu, behind the Chūgoku mountain range from the capital's perspective.

The provincial government operated from a capital in the Tottori plain, which served as the administrative, economic, and religious centre of the region. Over the centuries, control of Inaba shifted among various warrior houses, and by the Sengoku period the province was contested territory. During the Edo period, the province was divided into several domains, including Tottori Domain, Wakasa Domain, and Shikano Domain. Tottori Domain, the largest, was held by the Ikeda clan and governed much of the province from Tottori Castle.

The province remained an administrative unit until the abolition of the han system in 1871, when the domains were dissolved and the area was reorganised into prefectures. Inaba was merged with neighbouring Hōki Province to form Tottori Prefecture in the early Meiji period.

Territory and Influence

Inaba's territory covered the eastern half of present-day Tottori Prefecture, a region defined by the coastal plain around the city of Tottori and the mountains that rose inland toward the borders with Mimasaka and Harima Provinces. To the west lay Hōki Province, and to the east and south the borders ran against Mimasaka, Harima, and Tajima Provinces.

The province's location on the Sea of Japan made it a point of contact with the broader Japan Sea world, though its mountainous interior limited easy overland communication with the Kinai region. The provincial capital at Tottori functioned as the seat of the kokuga, or provincial office, and the surrounding plain supported agriculture that sustained the provincial administration.

The ichinomiya, Ube Shrine, held particular religious authority within the province. As the highest-ranked shrine, it was the primary site for provincial rituals and a marker of Inaba's identity within the wider system of shrine rankings established under the Engishiki. The shrine's prominence tied the province's sacred geography to the imperial state's ceremonial order.

The Name in Japanese

The Japanese name is 因幡国, read in kana as いなばのくに, and in romaji as Inaba no kuni. The word kuni (国) means "province" or "country," and was the standard suffix for provincial names.

Breaking the name down character by character:

• 因 — read here as ina. This kanji carries the meanings of "cause," "reason," or "by means of." In the context of the province name, it is used primarily for its phonetic value rather than its semantic sense, a common practice in ancient place names. The character appears in modern compounds such as 原因 (gen'in, "cause") and 因子 (inshi, "factor").

• 幡 — read here as ba. The character means "banner," "flag," or "streamer," and in this word it too functions phonetically. The reading ba is a voiced form of the character's more common reading hata, as in 旗幡 (hata, "banner"). The shift from hata to ba occurs because the character follows the preceding ina in compound pronunciation.

• 国 — read here as kuni. This character means "country," "province," or "nation." It is one of the most common kanji in Japanese, appearing in words such as 外国 (gaikoku, "foreign country") and 国際 (kokusai, "international"). In the provincial naming system, it marked the entity as a kuni, one of the administrative provinces of the Ritsuryō state.

The full name thus reads literally as "Ina-banner province," though the first two characters are best understood as a phonetic rendering of the place name Inaba rather than as a meaningful compound. The abbreviated form Inshū (因州) uses the first character 因 with the suffix 州 (shū), a common way to shorten province names in classical and premodern usage.

Legacy

The administrative province of Inaba ceased to exist in the Meiji period, but its name and boundaries continue to shape regional identity. The territory of the former province now forms the eastern half of Tottori Prefecture, and the city of Tottori retains the name of the old provincial capital.

The ichinomiya, Ube Shrine, remains an active religious site and a point of local pride. The abbreviated name Inshū survives in place names and institutional titles, such as Inshū pottery, a local craft tradition. The province's historical role as a San'in coastal territory is reflected in the modern region's continued orientation toward the Sea of Japan, and the old provincial borders still correspond roughly to cultural and dialectal divisions within Tottori Prefecture.