John Milne (January 22, 1839 – March 4, 1922) was a Canadian iron moulder, businessman and Senator.
Milne was president and managing director of Burrow, Stewart and Milne, a Hamilton, Ontario foundry company that manufactured stoves and was also president or director of several other Hamilton area concerns.
He was also involved with municipal governance as one of the city's first hydro commissioners and also served as an appointee on various other municipal boards.He was appointed to the Senate in 1915 by Sir Robert Borden and sat as a Conservative.