East Tartary, or Maritime Tartary, are old names for Manchu territory extending from the confluence of the River Amur with the River Ussuri to Sakhalin Island. This area is now the Primorsky Krai with Vladivostok as regional administrative center.

These lands were once occupied by the Mohe tribes and Jurchen nation; and also by the old Korean kingdoms of Paekche, Shilla and Parhae, and the Liao and Khitan kingdoms.

According to Sheng-Wu-Chi ("Our august dynasty military realizations inform") Ming dynasty chronicle, in this land were established the Tungus Weji ,Warka and Kurka tribes. Later these were unified in Manchu Qing Empire with Nurhaci as leader and founder. These lands were lost to Peking under a treaty.

Precisely nearest this land stay the Ku-Ye-Dao (Chinese) or Fu-Sang (Korean) island, better known as Karafuto or Sakhalin; here in recent times Russian archaeologists have found remains of ancient cities with walls and castles. These may correspond with the ancient Manchu nation, or possibly during Mongol or Tungus times, or the Parhae kingdom.

These lands were visited by Japanese explorers, Mamiya Rinzo and others, who reported on the various important cities and ports, such as Haishenwei (present day Vladivostok). From just these lands and nearby Hulun (Amur area) Japanese have claimed North Asian ancestors, who settled North Japan.

Other ancient cities in the region are: Tetyukhe (now Dalnegorsk) and probably Deleng , an important commercial imperial post according to some records.