Trimeresurus fasciatus is a venomous pit viper species endemic to Djampea Island, Indonesia. No subspecies are currently recognized. Common names include: banded pitviper and banded tree viper.
Scalation includes 21 rows of dorsal scales at midbody, 158-160/159-163 ventral scales in males/females, 63-65/61 subcaudal scales, and 9 or 10 (less frequently 11) supralabial scales.
The type specimen is 45.5 cm (17.9 in) in total length, which includes a tail 8 cm (3.1 in) long.
