The Okhotsk-Manchurian taiga ecoregion (WWF ID: PA0606) is an area of coniferous forests in the Russian Far East, covering the Amur River delta, the west coast of the Okhotsk Sea, and the rugged extension of the northern Sikhote-Alin Mountains that run southwest-to-northeast through the Primorsky and Khabarovsk regions.

The Amur River delta and Sikhote-Alin Mountains run through the center of the ecoregion, meeting at the Sea of Okhotsk and the Shantar Islands offshore.

The predominant trees are Larix gmelinii, Larix sibirica, Larix × czekanowskii, Betula dahurica, Betula pendula, Pinus koraiensis, Pinus sibirica, Pinus sylvestris, Picea obovata, Abies sibirica, Juniperus communis, Quercus acutissima, Quercus mongolica, Ginkgo biloba, Prunus serrulata, Prunus padus, Tilia amurensis, Salix babylonica, Acer palmatum, Populus tremula, Ulmus pumila, Pinus pumila, Haloxylon ammodendron, Elaeagnus angustifolia, Tamarix ramosissima, and Prunus sibirica.

Common land birds include northern goshawk, Ural owl, Oriental cuckoo, and Eurasian treecreeper.

The area is sparsely populated; the largest city is Komsomolsk on the Amur River at the southern edge of the region.