Amba Geshen is the name of a mountain in northern Ethiopia. It is in Ambassel, South Wollo Zone of the Amhara Region, northwest of Dessie, at a latitude and a longitude of 11°31′N 39°21′E. Part of Ambassel woreda, Amba Geshen is one of the mountains of Ethiopia where most of the male heirs to the Emperor of Ethiopia were interned, usually for life. Also known as Gishen Mariam, it was the second of the three such mountains, or amba, said to have been used for this purpose, the other two being Debre Damo and Wehni.

The emperor of Ethiopia, also known as the Atse, was the hereditary ruler of the Ethiopian Empire, from at least the 13th century until the abolition of the monarchy in 1975. The emperor was the head of state and head of government, with ultimate executive, judicial and legislative power in that country. A National Geographic article from 1965 called imperial Ethiopia "nominally a constitutional monarchy; in fact [it was] a benevolent autocracy".