Vapi is a city and a municipality in Valsad district in the Indian state of Gujarat. It is situated on the banks of Damanganga River in southern Gujarat, India. Vapi falls under the taluka administration of Pardi.

The industrial township of Vapi holds its place of importance on the "industrial" map and it is certainly the second largest industrial area in Asia in terms of small-scale industries, dominated by chemical industry plants, along with their unfortunate hazards.

The township predominantly hosts Chemical plants to the extent of about 70% of the total industries which mainly includes Chemical Pesticides, Dyes, Dyes intermediaries and paints. Other major industries include Paper, Packaging, Pharmaceuticals, Plastics, Rubber, Textiles, Woods, Glass, and food products. This is the largest of its kind in Asia treating the pollutants of these units before the efluent is released in the Daman Ganga River.