| Sidkeong Namgyal | |
|---|---|
| Chogyal of Sikkim | |
| Reign | 1863 – 1874 |
| Predecessor | Tsugphud Namgyal |
| Successor | Thutob Namgyal |
| Born | 1819 |
| Died | 1874 |
| House | Namgyal dynasty |
| Father | Tsugphud Namgyal |
| Religion | Buddhism |
Sidkeong Namgyal (Sikkimese: སྲིད་སཀྱོང་རྣམ་རྒྱལ་; Wylie: srid skyong rnam rgyal) (1819–1874) was king of Sikkim from 1863 to 1874. He was son of Tsugphud Namgyal and was succeeded by his half-brother Thutob Namgyal.[1][2]
His mother was the second wife of his father, a Tibetan lady, sister of the Tashi Lama.[citation needed]
It was Sidkeong Namgyal who signed the Treaty of Tumlong with the British in 1861, his father having abdicated rather than return to surrender to the force of Sir Ashley Eden.[3]