The Brunswick Boat Group, headquartered in Knoxville, Tennessee, United States, is the largest maker of pleasure boats in the world. The company's net sales were US$1.7 billion in 2008, and US$1.0 billion in 2012. The Boat Group makes Sea Ray, Bayliner and Meridian pleasure boats; Boston Whaler offshore fishing boats; and Crestliner, Cypress Cay, Harris, Lowe, Lund, Princecraft fishing, deck and pontoon boats. Brunswick is one of the largest boat makers by units in Europe, with Quicksilver, Uttern and Valiant boat brands. Brunswick also owns the New Zealand boat brand, Rayglass. Brunswick markets its specialty boats through Brunswick Commercial and Government Products. Attwood and Kellogg boat parts and accessories, once a part of the group, are now a part of the Mercury Marine group.

Brunswick Corporation, formerly known as the Brunswick-Balke-Collender Company, is an American corporation that has been developing, manufacturing and marketing a wide variety of products since 1845. Brunswick has more than 13,000 employees operating in 24 countries. Brunswick owns major boating brands, including Sea Ray, Boston Whaler, Bayliner, Mercury Marine, Attwood, Lund, Crestliner, Mastervolt, MotorGuide, Harris Pontoons, Freedom Boat Club, Princecraft, Heyday, Lowe, Uttern, Quicksilver and CZone, among many others. In 2021, Brunswick reported sales of US$5.8 billion. Brunswick's global headquarters is in the northern Chicago suburb of Mettawa, Illinois.