Gar Mangsham Sumnang (Tibetan: མགར་མང་ཞམ་སུམ་སྣང་, Wylie: mgar mang zham sun snang; ? – ?) was a 7th century ce general of the Tibetan Empire. He was active during Namri Songtsen's and Songtsen Gampo's reign.

Gar Mangsham Sumnang
Tibetan name
Tibetan མགར་མང་ཞམ་སུམ་སྣང་
Transcriptions
Wyliemgar mang zham sun snang
THLgar mang zham sum nang

The Lönchen Thonmyi Tringpo Gyaltsennu tried to overthrow Namri Songtsen, and was detected by him. Sumnang set a trap together with another general khu khri snya dkru' zung, captured him, and cut off his head by sword.

He served as high minister during Songtsen Gampo's reign. After Nyang Mangpoje's execution, he was appointed as Lönchen, and later turned to another general Khyungpo Pungse.

References

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Political offices
Preceded by "Lönchen" of Tibet
? – ?
Succeeded by