The Rennell Starling (Aplonis insularis) is a species of starling in the Sturnidae family. It is endemic to Rennell Island in the Solomon Islands.

The plumage of the Rennell Starling is blackish with a green-blue gloss. It has a yellow-orange eye and a short tail. It is an abundant bird of tropical moist lowland forests, secondary growth and coconut plantations.