Tĩnh Hải quân

Tĩnh Hải quân or the Jinghai regiments (Chinese: 靜海軍, pinyin: Jìnghǎi-jūn) was the name of Viet Nam from 866 to 968. It was the reconstituted Chinese military protectorate of Annam in northern Vietnam during the Third Chinese domination of Vietnam. The area of the commandery is sometimes referred to as "Circuit" (道 dao) in Jinghai the term Jinghai-jun was used.

This was the fifth section of the third domination commencing with Giao Châu (or Jiaozhou, 602–679), then An Nam (or Annam, 679–757), Trấn Nam (757–766), An Nam again (766–866) and then Tĩnh Hải quân (or Jinghai-jun, 866–967).

During the period until 939, Vietnam was governed by jiedushi, including finally the three generations of the Khuc family who briefly asserted autonomy from China. With the proclamation of independence by Ngo Quyen, this name was retained under the Ngo Dynasty and the Anarchy of the 12 Warlords. In 968, Dinh Bo Linh vanquished the warlords and renamed the country as Đại Cồ Việt.

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