Kēśirāja, also spelled Keshiraja, was a 13th-century Kannada grammarian, Jain poet and writer. and nephew of the famous Janna. Kēśirāja is particularly known for composing Shabdamanidarpana, an authoritative work on Kannada grammar. According to the Sanskritist Sheldon Pollock, because of this work he is considered the "greatest theorist of Kannada grammar". He was also a scholar in Sanskrit as well and a court poet in the Hoysala Court.