The Sauble River is a river in Bruce County and Grey County in southwestern Ontario, Canada that flows from its headwaters in the township of Chatsworth to Lake Huron north of the community of Sauble Beach.

[1] The Sauble River begins at an unnamed pond in the township of Chatsworth in Grey County, between the communities of Desboro to the north and Mooresburg to the south.

It heads north then west, takes in the left tributary Grimston Creek and right tributary Keady Creek, passes along the border to the municipality of Arran–Elderslie in Bruce County near the community of Grimston, before entering that municipality and reaching the community of Tara, where it takes in the left tributary Tara Creek.

The river continues north, takes in the left tributary Arkwright Creek, passes through the community of Allenford, and reaches the municipality of South Bruce Peninsula.

[4] The south (upper) Sauble River drainage basin has fair (15 to 20%) forest cover and poor (12.5 to 25%) riparian zone forest cover, fair water quality and good benthic species; the north (lower) drainage basin has excellent (greater than 35%) forest cover and fair (25% to 50%) riparian zone forest cover, excellent water chemistry and good benthic species.