Robert V. Callahan (April 11, 1937–December 26, 2020) is a former politician from Ontario, Canada. He served as a Liberal member of the Legislative Assembly of Ontario from 1985 to 1995 representing the ridings of Brampton and Brampton South. From 1969 to 1985, and from 1997 to 2014 he served as a Brampton city councillor.