The Western Java rain forests ecoregion (World Wildlife Fund ID: IM0168) covers the lowland rain forests below 1,000 meters in elevation in the western half of the island of Java in Indonesia.

There are a variety of forest types - evergreen, semi-evergreen, moist deciduous, and even some patches of freshwater swamp.

The forests have degraded by conversion of the low areas to agriculture, and by logging.

National parks protect some of the last remaining untouched rain forest.

The evergreen forest's common plants include Artocarpus elasticus (a tree in the mulberry family), yellow mahogany (Dysoxylum parasiticum), langsat (Lansium domesticum), and Planchonia valida (a tree in the Lecythidaceae family).