Braj, though never a clearly defined political region, is considered to be the land of Krishna and is derived from the Sanksrit word vraja. Thus, Brajbhasa is the language of Braj and it was the language of choice of the Bhakti movement, or the neo-Vaishnavite religions, the central deity of which was Krishna. Therefore, most of the literature in this language pertains to Krishna composed in medieval times.

Brajbhasa, or Brajavali was adapted to the Assamese language by Srimanta Sankardeva for his compositions in the 15th and 16th century in Assam.

Brajbhasha is a dialect of Hindi language, spoken in Uttar Pradesh.

Brajbhasa is spoken in Mathura, Vrindavana, Agra, Aligarh, Bareli, Bulandhshahar and Dhaulpur. It has a very sweet tone. Much of the Hindi literature was developed in Braj in the medieval period. However, today Khari dialect has taken its place.