The greater green leafbird (Chloropsis sonnerati) is a species of bird in the Chloropseidae family. It is distinguished from the lesser green leafbird (Chloropsis cyanopogon) by its powerful beak, yellow throat and eye ring of the female; and lack of a yellow border along the black throat patch found in the male c. cyanopogan.
It is found in Brunei, Indonesia, Malaysia, Myanmar, Singapore, and Thailand. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical mangrove forests, mainly old-growth forests but also secondary forests and edges.
It moves quite conspicuously at the canopy level, jumping between branches and flying from tree to tree. It often visits fruiting fig trees, but also takes insects and small invertebrates.
The greater green leafbird has a loud voice, consisting of an ascending whistle chee-zi-chee.