The white-bellied kingfisher (Corythornis leucogaster) is a species of kingfisher in the subfamily Alcedininae that occurs in Mali and throughout the African tropical rainforest. The first formal description of the species was by the British zoologist Louis Fraser in 1843 under the binomial name Halcyon leucogaster.

There are three subspecies:

The white-bellied kingfisher is 13 cm (5.1 in) in length with a weight of around 14.5 g (0.51 oz). It has ultramarine upperparts and a red bill. The underparts are rufous-chestnut apart from a central white band. The sexes are alike.