Purushottam Prasad Pathak is a scholar specializing in Sanskrit grammar and poetics. He is known for his analytical studies of classical grammarians, particularly Nagesha Bhatta. His work, नागेशमते परिभाषाणां विवेचनम् (Nageshamate Paribhasanam Vivechanam), offers a critical examination of Nagesha Bhatta's Paribhashas (metarules of grammar).