Proto-Dravidian is the linguistic reconstruction of the common ancestor of the Dravidian languages native to the Indian subcontinent. It is thought to have differentiated into Proto-North Dravidian, Proto-Central Dravidian, and Proto-South Dravidian, although the date of diversification is still debated.

As a proto-language, Proto-Dravidian is not itself attested in historical records. Its modern conception is based solely on reconstruction. It is suggested that the language was spoken in the 4th millennium BCE, and started evolving into various branches around 3rd-millennium BCE.^{[full citation needed]}

The origin and territory of the Proto-Dravidian speakers is uncertain, but some suggestions have been made based on the reconstructed Proto-Dravidian vocabulary. The reconstruction has been done on the basis of cognate words present in the different branches (Northern, Central and Southern) of the Dravidian language family.

According to Fuller (2007), the botanical vocabulary of Proto-Dravidian is characteristic of the dry deciduous forests of central and peninsular India. For the Southern Dravidians, this region extends from Saurashtra and Central India to South India. It thus represents the general area in which the Dravidians were living before the separation of branches.

According to Franklin Southworth (2005), the Proto-Dravidian vocabulary is characteristic of a rural economy based on agriculture, animal husbandry and hunting. However, there are some indications of a society more complex than a rural one:

This evidence is not sufficient to determine with certainty the territory of the Proto-Dravidians. These characteristics can be accommodated within multiple contemporary cultures, including:

Proto-Dravidian contrasted between five short and long vowels: *a, *ā, *i, *ī, *u, *ū, *e, *ē, *o, *ō. The sequences *ai and *au are treated as *ay and *av (or *aw).

Proto-Dravidian has been reconstructed as having the following consonant phonemes: