Vasai Creek is an estuarine creek, one of the two main distributaries of the Ulhas River in Maharashtra state of western India. The Ulhas splits at the northeast corner of Salsette Island into its two main distributaries, Vasai Creek and Thane Creek. Vasai Creek forms the northern boundary of Salsette Island, and empties west into the Arabian Sea; Thane creek empties southwards into Bombay Harbour.