MS Chi-Cheemaun is a Canadian passenger and vehicle ferry in Ontario, Canada, which traverses Lake Huron between Tobermory on the Bruce Peninsula and South Baymouth on Manitoulin Island. The ferry connects the two geographically separate portions of Highway 6 and is the vessel that replaced MS Norgoma and SS Norisle in 1974. The ferry service runs seasonally from mid-May to mid-October. As of 2022 she is the third largest passenger vessel sailing the Great Lakes after the expedition cruise liner Viking Octantis and the US ferry SS Badger, although several larger vessels previously serving the Great Lakes are still in service in other parts of the world.

Tobermory is a small community located at the northern tip of the Bruce Peninsula, in the traditional territory of the Saugeen Ojibway Nation. Until European colonization in the mid-19th century, the Bruce Peninsula was home to the Saugeen Ojibway nations, with their earliest ancestors reaching the area as early as 7,500 years ago. It is part of the municipality of Northern Bruce Peninsula. It is 300 kilometres northwest of Toronto. The closest city to Tobermory is Owen Sound, 100 kilometres south of Tobermory and connected by Highway 6.