Ranipettai is a town in Tamil Nadu, India and the headquarters of Ranipet district. Ranipet is an industrial hub of greater Vellore city. It is located about 100 kilometres (62 mi) from the Chennai city center. It is a major industrial town located on NH 4 Chennai-Bangalore highway, on the northern bank of the Palar River.The estimated population is 397,000 as of 2024.

Ranipet district is one of the 38 districts of Tamil Nadu, India, formed by trifurcating Vellore district. The Government of Tamil Nadu has announced its proposal on 15 August 2019, together with Tirupattur district. However, it was officially declared on 28 November 2019 by Tamil Nadu Government. The town of Ranipet would serve as the district headquarters.