Navi Mumbai, formerly known as New Bombay, is located on the west coast of the of Maharashtra. It was developed in 1972 as a twin city of Mumbai, and is one of the largest planned cities in the world, with a total area of 344 sq. km and 163 sq. km. Navi Mumbai lies on the mainland on the eastern seaboard of Thane Creek. The limit of the city stretches from Airoli near Thane in the north, to Uran in the south, with length of the city almost as same as that of Mumbai.

The Vashi and the Airoli Bridges connect Navi Mumbai to Mumbai and a new link between Nerul and Uran is under construction. Navi Mumbai has an approximate population of 2,100,000.

Navi Mumbai is a part of the Mumbai Conurbation under the jurisdiction of the Navi Mumbai Municipal Corporation (NMMC), which is also rated amongst the richest corporations in Asia. Also, Navi Mumbai is the only Indian city to be featured in the National Geographic Channel's Super Cities.

Navi Mumbai was planned with a specific purpose to decongest Mumbai and become an alternative haven for the multitudes that throng Mumbai from different parts of India. However today, Navi Mumbai is competitor for Mumbai in every respect.