A number of large rivers – the Ganges and its distributaries such as Padma and Hooghly, the Brahmaputra and its distributaries such as Jamuna and Meghna, other rivers such as Irrawaddy River, Godavari, Mahanadi, Krishna and Kaveri flow into the Bay of Bengal.
Bengalski zaliv, največji zaliv na svetu, obsega severovzhodni del Indijskega oceana.