Grandes-Piles (French pronunciation: [ɡʁɑ̃d pil]) is a village municipality in the Mauricie region of the province of Quebec in Canada.

One of the best-known but false explanations is that it referred to a stack of logs entanglement on the rocks of the Saint-Maurice that inspired the early settlers.

At that time, it was the main transportation hub for the interior areas of the Mauricie since it was located at the head of navigation on the Saint-Maurice, and had warehouses and rail access.

In 1997, the Compagnie de flottage du St-Maurice, the company responsible for log driving on the Saint-Maurice, ceased operations and the industrial waterfront of Grandes-Piles was reclaimed for tourism.

The northwestern part of the municipality faces the La Mauricie National Park, located on the west bank of the Saint-Maurice River.

Since 1996, the reopening of the waterway free of floating logs, the Saint-Maurice River offers to boaters a large choice for water sports and a paradise for sailing.