Green Ukraine, also known as Zeleny Klyn (Ukrainian: Зелений клин, romanized: Zelenyy Klyn, Russian: Зелёный Клин, romanized: Zelyonyy Klin, literally: "the green gore/wedge"), is a historical Ukrainian name for the land in the Russian Far East area between the Amur River and the Pacific Ocean, an area roughly corresponding to the Chinese concept of Outer Manchuria.
Rail transport in Ukraine is a mode of transport by railway in Ukraine. Railway infrastructure transport in Ukraine in majority is owned by government of Ukraine through Ukrzaliznytsia (Ukrainian Railways) that officially has a country-wide monopoly on passenger and freight transport by rail.