The violet sabrewing (Campylopterus hemileucurus) is a species of hummingbird in the "emeralds", tribe Trochilini of the subfamily Trochilinae.

Their nape and upper back, face, and underparts are metallic violet blue that is somewhat bluer on the belly.

Their central tail feathers are bluish green and the rest blacker with wide white tips.

[5][6] Males of subspecies C. h. mellitus have more green on their upper parts than the nominate and almost entirely violet underparts with no blue on the belly.

[5] The nominate subspecies of violet sabrewing is found from the Mexican states of Guerrero and Veracruz intermittently south through Guatemala, southern Belize, Honduras, and El Salvador into northern Nicaragua.

[5][7] The violet sabrewing is mostly sedentary, but individuals frequently move to lower elevations after the breeding season.

[5] The violet sabrewing feeds on nectar primarily by trap-lining, visiting a circuit of flowering plants.

[5][7] The violet sabrewing breeds during the local rainy season, which ranges from June to September in Mexico and May to November in Costa Rica.