The Yunnan keelback (Hebius parallelus) is a species of natricine snake which is endemic to Asia.

It is found in Bhutan, China (Tibet and Yunnan), Northeast India (Arunachal Pradesh, Assam, Sikkim, Nagaland) and Myanmar.

[1] Dorsally, it is brown with two parallel yellowish, black-edged stripes on the body and tail.

The ventrals and subcaudals are uniform yellow, or with a black dot on each side.

Strongly keeled dorsal scales arranged in 19 rows at midbody.