Mundari (Munɖari) is a Munda language of the Austroasiatic language family spoken by the Munda tribes in eastern Indian states of Jharkhand, Odisha and West Bengal and northern Rangpur Division of Bangladesh. It is closely related to Santali. Mundari Bani, a script specifically to write Mundari, was invented by Rohidas Singh Nag. It has also been written in the Devanagari, Odia, Bengali, and Latin writing systems.

The Munda people are an Austroasiatic-speaking ethnic group of the Indian subcontinent. They speak Mundari as their native language, which belongs to the Munda subgroup of Austroasiatic languages. The Munda are found mainly concentrated in the south and East Chhotanagpur Plateau region of Jharkhand, Odisha and West Bengal. The Munda also reside in adjacent areas of Madhya Pradesh as well as in portions of Bangladesh, Nepal, and the state of Tripura. They are one of India's largest scheduled tribes. Munda people in Tripura are also known as Mura.