Nge Mangsham Taktsab (, died 727) was a general of Tibetan Empire.
According to Tibetan Annals, Mangsham was appointed as the Lönchen in 725 after Shang Trisumje's death. He was ordered to convene a spring coalition in 726, and levied taxes on people who were directly subordinate to the emperor. He died in the next year and succeeded by another general, We Tadra Khonglo.
References Old Tibetan Annals (version I), I.T.J. 0750 Old Tibetan Chronicle, P.T. 1287