Keurig (/ˈkjʊərɪɡ/) is a beverage brewing system for home and commercial use. The North American company Keurig Dr Pepper manufactures the machines. The main Keurig products are K-Cup pods, which are single-serve coffee containers; other beverage pods; and the proprietary machines that use these pods to make beverages.

Keurig beverage varieties include hot and cold coffees, teas, cocoas, dairy-based beverages, lemonades, cider, and fruit-based drinks. Keurig has over 400 varieties and over 60 brands of coffee and other beverages through its own and partnership-licensed brands. In addition to K-Cup pods, it includes Vue, K-Carafe, and K-Mug pods.

The original single-serve brewer and coffee-pod manufacturing company, Keurig, Inc., was founded in Massachusetts in 1992. It launched its first brewers and K-Cup pods in 1998, targeting the office market. As the single-cup brewing system gained popularity, brewers for home use were added in 2004. In 2006, the publicly traded Vermont-based specialty coffee company Green Mountain Coffee Roasters acquired Keurig, sparking rapid growth for both companies. In 2012, Keurig's main patent on its K-Cup pods expired, leading to new product launches, including brewer models that only accept pods from Keurig brands.

From 2006 to 2014, Keurig, Inc. was a wholly owned subsidiary of Green Mountain Coffee Roasters. When Green Mountain Coffee Roasters changed its name to Keurig Green Mountain in March 2014, Keurig ceased to be a separate business unit and subsidiary and instead became Keurig Green Mountain's main brand. In 2016, Keurig Green Mountain was acquired by an investor group led by private-equity firm JAB Holding Company for nearly $14 billion. In July 2018, Keurig Green Mountain merged with Dr Pepper Snapple Group in a deal worth $18.7 billion, creating Keurig Dr Pepper, a publicly traded conglomerate which is the third largest beverage company in North America.

Keurig founders John Sylvan and Peter Dragone had been college roommates at Colby College in Maine in the late 1970s. In the early 1990s, Sylvan, a tinkerer, had quit his tech job in Massachusetts and wanted to avoid the issues of brewed coffee becoming bitter, dense and stale with time by creating a single-serving pod of coffee grounds and a machine that would brew it. Living in Greater Boston, he went through extensive trial and error trying to create a pod and a brewing machine. By 1992, to help create a business plan, he brought in Dragone, then working as director of finance for Chiquita, as a partner. They founded the company in 1992, calling it Keurig; Sylvan later said that the name came from his having "looked up the word excellence in Dutch". Although an individual named Dick Sweeney is sometimes considered the third founder of Keurig, Sylvan does not contend with this claim. Sylvan agrees that Sweeney joined the company, but that this occurred after at least two years into the company's founding.

The prototype brewing machines were also a work in progress and unreliable, and the company needed funds for development. That year, they approached what was then Green Mountain Coffee Roasters, and the specialty coffee company first invested in Keurig at that time. Keurig needed sizeable venture capital; and after pitching to numerous potential investors, the partners finally obtained $50,000 from Minneapolis-based investor Food Fund in 1994, and later the Cambridge-based fund MDT Advisers contributed $1,000,000. In 1995, Larry Kernan, a principal at MDT Advisers, became Chairman of Keurig, a position he retained through 2002. Sylvan did not work well with the new investors, and in 1997, he was forced out, selling his stake in the company for $50,000. Dragone left a few months later but decided to retain his stake.

In 1997, Green Mountain Coffee Roasters became the first roaster to offer its coffee in the Keurig "K-Cup" pod for the newly market-ready Keurig Single-Cup Brewing System, and in 1998, Keurig delivered its first brewing system, the B2000, designed for offices. Distribution began in New York and New England. The target market at that time was still office use, and Keurig hoped to capture some of Starbucks' market. To satisfy brand loyalty and individual tastes, Keurig found and enlisted a variety of regionally known coffee brands that catered to various flavor preferences. The first of these was Green Mountain Coffee Roasters, and additional licensees for the K-Cup line included Tully's Coffee, Timothy's World Coffee, Diedrich Coffee, and Van Houtte, although Green Mountain was the dominant brand. Keurig also partnered with a variety of established national U.S. coffee brands for K-Cup varieties, and in 2000, the company also branched out the beverage offerings in its K-Cup pods to include hot chocolate and a variety of teas. The brewing machines were large and hooked up to an office's water supply; Keurig sold them to local coffee distributors, who installed them in offices for little or no money, relying on the K-Cups for profits.

Keurig is credited with creating a new category with their cup-at-a-time pod-style brewing, a breakthrough product and a breakthrough business model.