Great Rattling Brook is a stream located in Newfoundland and Labrador, Canada, positioned at approximately 48°58′N 55°33′W within the greater Exploits River watershed. Though less widely known than some of the region's marquee salmon rivers, Great Rattling Brook has a storied history as a productive fishery and is considered one of the area's hidden gems for anglers seeking big fish in a less-pressured setting. The brook is accessible by road and rail, and thanks to a network of logging roads in the area, virtually any section of the river can be reached with relative ease — a rare advantage compared to many of Newfoundland's more remote salmon streams. Its connection to the mighty Exploits River system, which sees annual fish returns in the 35,000 to 45,000 range, gives Great Rattling Brook significant angling potential.