Green Ukraine,[a] also known as Zelenyi Klyn[b] or Zakytaishchyna,[c][note 1][3][4] is a Ukrainian name for a would-be independent Ukrainian state in the southern Russian Far East area between the Amur River and the Pacific Ocean, an area roughly corresponding to Outer Manchuria.

Geographically, Green Ukraine borders the present-day North Korea, in the special city of Rason and the Chinese provinces of Heilongjiang and Jilin.

[8] The territory was also informally known as Ukrainian: Закитайщина, romanized: Zakytaishchyna, "Trans-China", i.e., "land beyond China".

The first attempts at colonizing the area date back to the mid-17th century when Yerofey Khabarov founded the fort of Albazin on the Amur River.

During this period, only a small number of settlers settled in the region consisting of some 14,000 Cossacks and 2,500 Russian soldiers.

[12] Head of the Krai Secretariat: The Green Ukraine was located in the Outer Manchuria, extending across Amur River, Zeya, Svobodny, Blagoveshchensk, Ussuriland, to the north, Nikolayevsk-on-Amur, Khabarovsk, Vladivostok.