Yumbu Lakhang (Tibetan: ཡུམ་བུ་བླ་སྒང།, Wylie: yum bu bla sgang) or Yumbu Lakhang (Tibetan: །, Wylie: yum bu bla mkhar, also known as Yumbu Lakhang) is an ancient structure in the Yarlung Valley in the vicinity of Tsetang, Nêdong County, the seat of Lhoka Prefecture, in the southern Tibet Autonomous Region of China.

According to legend, it was the first building in Tibet and the palace of the first Tibetan king, Nyatri Tsenpo. Yumbu Lakhang stands on a hill on the eastern bank of the Yarlung River in the Yarlung Valley of southeast Nêdong County about 192 kilometres (119 mi) southeast of Lhasa and 9 kilometres (5.6 mi) south of Tsetang.