The Uluguru violet-backed sunbird (Anthreptes neglectus) is a species of bird in the family Nectariniidae. The bird is small with a short bill. The male is an iridescent upper body while the female has a brown upperbody. Both have pale-gray underbodies. It is found in forests in eastern Kenya, eastern Tanzania (including the Uluguru Mountains, the basis for its common name) and north-eastern Mozambique. It is part of the violet-backed sunbird superspecies.
In 2024, Anthreptes neglectus is listed as Least Concern.