| Grand Marais Road | |
| Length Km: | 8 |
| Direction A: | East |
| Direction B: | West |
| Terminus A: | Pillette Road |
| Terminus B: | Huron Church Road/Highway 3 and Lambton Road |
| Location: | Windsor, Essex County |
Grand Marais Road (French for "Big Marsh Road") is a road that travels through Windsor, Ontario. Its use and significance has dwindled considerably following the completion of the E.C. Row Expressway.
The intersection with Walker Road is the site where the Tornado of 1946 touched down for a second time and reached its peak intensity of F4.
Grand Marais Road used to be in one piece, linking Huron Church Road in the southwest with Pillette Road in the east, following Turkey Creek fairly closely (hence the name "Big Marsh Road").
Once E.C. Row Expressway was constructed, parts of the road were closed off and torn up. They are listed below, heading westbound:
From Bruce Avenue, the road continues much as it did before the expressway was built, with bike lanes along much of its path to its terminus with Huron Church Road.
The road is lightly used, and is a collector road that feeds major arterial roads nearby. It travels through several residential neighbourhoods, such as South Windsor.
West Grand Boulevard is a derivative street that parallels Grand Marais (located just north of Turkey Creek) between Huron Church Road and Dougall Avenue. The road ranges from a collector road to a driveway, a bike path and a sidewalk. The road is discontinuous in sections, linked by trails and sidewalks. The road changes sides (from the south bank to the north bank) near Rankin Avenue (a residential street), with the street on the south bank named "West Grand Court".