Mathukumalli (Matukumalli) Venkata Subbarao (May 4, 1921 – February 15, 2006) was an Indo-Canadian mathematician, specialising in number theory. He was a long-time resident of Edmonton, Alberta, Canada. A prolific collaborator, Subbarao had more than 40 joint authors (including Paul Erdős, giving him Erdős number 1). He continued producing mathematics papers into the final years of his life. He died in Edmonton at the age of 84. Subbarao was the father of Prof. Mathukumalli Vidyasagar.