Erin Mills is a large suburban district in the city of Mississauga, Ontario, Canada, approximately 32 km west of Downtown Toronto. Starting in the 1970s, Erin Mills was developed as a "new town" by the Cadillac Fairview Corporation on over 7,000 acres of farmland around Erin Mills Town Centre. Cadillac Fairview inherited the development from E. P. Taylor's Don Mills Development Corporation, which acquired land in the 1950s and coined the area's name.