Route 155 is a north/south highway on the north shore of the Saint Lawrence River in Quebec, Canada.

Its northern terminus is in Chambord at the junction of Route 169, and the southern terminus is the Piles Bridge in Shawinigan.

[2][3] Most of the length of the highway runs in the Mauricie region very close to the Saint-Maurice River on the opposite side of which is the La Mauricie National Park (Parks Canada).

Several small bridges and roads connect the park to Route 155.

It is also the main ground transportation route between the Mauricie and Centre-du-Québec regions and the Saguenay–Lac-Saint-Jean.