The Bhagirathi is the name of two major tributaries of the Ganga.

The Bhagirathi is a tributary originating from the Gangotri glacier in Uttaranchal, India and flows for about 700 km before merging with the Alaknanda at Deoprayag. After the confluence (Sangam) at Deoprayag, the river is known as the Ganga or Ganges.

The Bhagirathi is a sacred river to all Hindus of India, and is named after a mythological king named Bhagiratha, who is said to have brought the river down from heaven in order the redeem the souls of his ancestors. The controversial Tehri dam lies on

Bhagirathi is also the name of a separate distributary of the Ganga in West Bengal. It branches off from the Ganga in Murshidabad district at Nurpur, 25 Km below Farakka, runs parallel to her for about 2 Km, winds its way to the south and leaves the district north of Plassey. The river has played an important role in the history of Bengal and India, with many important early battles with the British having being waged along its banks. On its banks, mainly on the east, lie many historic and wealthy towns like Murshidabad, Jangipur and Ziaganj.

Bhagirathi