Domaine Au Grand R (also known as Camping Domaine Au Grand R) is a family-oriented recreational campground located at 761 Rue des Prairies in Trois-Rivières, Quebec, roughly ten minutes from the city center.

The property offers 399 sites and operates seasonally, welcoming tent campers and RV travelers alike.

Beyond standard camping, the complex features an aquatic zone that includes a water park with slides, a swimming lake, and a beach area, making it a draw for families with children. Organized events such as beach parties add to the recreational atmosphere.

An RV dump station with potable and rinse water is also available on site.