West Sikkim is a district of the Indian state of Sikkim. Its capital is Geyzing, also known as Gyalshing. The district is a favourite with trekkers due to the high elevations. Other important towns include Pelling and Jorethang.
West Sikkim has the ancient capital of the state Yuksom. It served as the capital beginning in 1642 for almost 50 years until it was shifted to Rabtense. The district was under the occupation of the Nepalese for many decades in the eighteenth and nineteenth centuries. After the Gorkha War, the district was returned to Sikkim.