Koul (born 7 January 1941 - Died 4 May 2018) was an Indian linguist.
As a researcher, his interests included the areas of linguistics, language education, communications management, and comparative literature.
Since the 1970s he had held several academic and administrative positions.
In particular, he had been a professor at the LBS National Academy of Administration, Mussoorie, India, and a professor at the Central Institute of Indian Languages, Mysore, India.
Koul also served as the director of the Central Institute of Indian Languages from 1999–2000.