The Yamuna (/jəmʊnaː/; Sanskrit and Hindi: यमुना), sometimes called Jamuna (Hindi: जमुना; /d͡ʒəmʊna:/) is the longest and the second largest tributary river of the Ganges (Ganga) in northern India. Originating from the  Yamunotri Glacier at a height of 6,387 metres on the south western slopes of Banderpooch peaks in the uppermost region of the Lower Himalayas in Uttarakhand, it travels a total length of and has a drainage system of , 40.2% of the entire Ganges Basin, before merging with the Ganges at Triveni Sangam, Allahabad, the site for the Kumbha Mela every twelve years. It is the longest river in India which does not directly flow to the sea.

The Yamuna (/jəmʊnaː/; Sanskrit and Hindi: यमुना), sometimes called Jamuna (Hindi: जमुना; /d͡ʒəmʊna:/) is the longest and the second largest tributary river of the Ganges (Ganga) in northern India. Originating from the  Yamunotri Glacier at a height of 6,387 metres on the south western slopes of Banderpooch peaks in the uppermost region of the Lower Himalayas in Uttarakhand, it travels a total length of and has a drainage system of , 40.2% of the entire Ganges Basin, before merging with the Ganges at Triveni Sangam, Allahabad, the site for the Kumbha Mela every twelve years. It is the longest river in India which does not directly flow to the sea.