The South Western Ghats moist deciduous forests is an ecoregion in the Western Ghats of southern India with tropical and subtropical moist broadleaf forests. This biome covers the Nilgiri Hills between elevation of 250 and 1,000 m in Kerala, Karnataka and Tamil Nadu states.

The Western Ghats, also known as the Sahyadris, is a mountain range that stretches 1,600 km (990 mi) along the western coast of the Indian peninsula. Covering an area of 160,000 km2 (62,000 sq mi), it traverses the states of Gujarat, Maharashtra, Goa, Karnataka, Kerala and Tamil Nadu. The mountains form an almost continuous chain of mountains along the western edge of the Deccan Plateau from the Tapti river to the southern tip of the Indian peninsula at Kanniyakumari. The Western Ghats meets with the Eastern Ghats at Nilgiris before continuing south.