The Parkway Belt, enacted in 1978, was Ontario's first attempt at slowing urban sprawl by means of development-free corridors. It was amended again and again in the following years to reduce its scope, such that it ended up as little more than a network of wide highway and utility rights of way.
In Mississauga, the parkway belt corridors follow highways 403, 407, 410 and Eastgate Parkway. Places of note in the belt include:
- Meadowvale Conservation Area
- Ninth Line community centre (P-459)
- Ninth Line Sports Park
- Transitway stations: Winston Churchill, Erin Mills, Central Parkway, Cawthra, Dixie
- Erin Mills Athletic Fields
- Pinchin Farm
- Ellis Leuschner Challenge Park
- Tomken Twin Arenas
- Andy Bathgate Driving Range
- Parkway Belt Park
- Iceland Mississauga
- Paramount Fine Foods Centre, formerly Hershey Centre
- Danville Park
The Missing Link is a proposal to redirect freight trains from the Milton and Georgetown lines onto a new railway within the Parkway Belt lands along Highway 407.