Jangtsa Dumgtseg Lhakhang [zlum brtshegs lha khang] is a Buddhist temple in western Bhutan.

[3] According to a local legend, the Lhakhang was built by the saint Thangtong Gyalpo to subdue a "serpentine force" that was located at the foundation of the chorten.

[3] The stupa-temple was built in 1421 (other sources say 1433) by an eminent Tibetan lama named Thangtong Gyalpo (1385–1464), also known as Chagzampa, who is remembered for his building of some eight iron bridges in Bhutan.

[1][2] In 1841, the 25th Je Khenpo, Sherab Gyeltsen restored the temple with the aid of local villagers, thanking the donors by carving their names on tree trunks which form the columns of the ground floor.

[7][page needed] Bhutan Postal Corporation Ltd., has issued a philatelic first day post card of the temple valued at Nu 10.