The Napo sabrewing (Campylopterus villaviscensio) is a Near Threatened species of hummingbird in the "emeralds", tribe Trochilini of subfamily Trochilinae. It is found in Colombia, Ecuador, and Peru.

The Napo sabrewing is about 13.5 cm (5.3 in) long. Males weigh 7.4 to 9.3 g (0.26 to 0.33 oz) and females 5.2 to 7.4 g (0.18 to 0.26 oz). Both sexes have an almost straight black bill and a white spot behind the eye. The male's crown is glittering golden green and the rest of its upperparts bronzy green. Its throat and chest are dark violet-blue and the rest of its underparts dark gray with green spots. Its central tail feathers are bronze-green and the rest dark blue. Females have entirely emerald green upperparts and gray underparts. Their tail is blue-green with whitish gray tips to the feathers.