Banganga or Banganga Tank is an ancient water tank which is part of the Walkeshwar Temple Complex in Malabar Hill area of Mumbai in India. The Tank was built in the 1127 AD, by Lakshman Prabhu, a minister in the court of Silhara dynasty kings of Thane.

The tank, as well as the main Walkeshwar Temple and the Parshuram Temple are beautiful peace of architecture. Many Goud Saraswat Brahmin families reside in the complex.

The tank is spring fed and so its water remains sweet, despite being located only a few dozen meters away from the sea.

It is a cultural hub and one of Mumbai’s oldest surviving structures. The ‘Banganga Festival’, of Music is organised here by the Maharashtra Tourism Development Corporation (MTDC).