Green Mountain Coffee’s K Cups are the most popular brand of K-Cups. In fact, most K-Cups enjoyed in the United States and Canada are produced by this socially responsible Vermont company.

Green Mountain Coffee also produces Celestial Seasonings tea, Caribou Coffee, Dunkin’ Donuts, Newman’s Own Organic coffee, and Starbucks Coffee (coming Fall 2011) in K-Cups under licensing agreements with the owners of those well-known brands.

Located in Irvine, California, Diedrich manufactures K Cups under the brand names Diedrich Coffee, Gloria Jeans Coffee & Tea, and Coffee People Coffee. In May 2010, Green Mountain Coffee purchased Diedrich Coffee and its family of brands.

In February 2011, Dunkin’ Donuts and Green Mountain Coffee reached an agreement allowing Green Mountain Coffee to manufacture Dunkin’ Donuts-branded K-Cups. The Dunkin’ Donuts K Cups are available exclusively at participating Dunkin’ Donuts restaurants.

In March 2011, Starbucks Coffee and Green Mountain Coffee reached an agreement allowing Green Mountain to manufacture of Starbucks- and Tazo-branded K Cups. The Starbucks K-Cups will be available at grocery, big box, and warehouse stores in Fall 2011. In 2012, the Starbucks K Cups will expand to Starbucks coffeehouses and the official online stores of Keurig, Green Mountain Coffee, and Starbucks.

Timothy’s Coffee, based in Toronto, Canada, manufactures KCup coffee and tea under the Timothy’s brand name and has a licensing agreement to produce Emeril’s-branded K-Cups. Green Mountain Coffee bought the KCup side of Timothy’s Coffee in November, 2009. Timothy’s Coffee continues to operate its retail stores throughout Canada.

The Seattle-based Tully’s Coffee Company manufactures K-Cups using the Tully’s name. In September 2008, Green Mountain Coffee purchased the Tully’s K Cup business. Tully’s Coffee continues to operate their retail stores in the Northwest.

Twinings Tea, located in Clifton, New Jersey, makes eight different K-Cup teas for the Keurig one cup brewing system.

Montreal, Canada-based Van Houtte Coffee manufactures KCups under their own brand name and the Wolfgang Puck brand. Van Houtte Coffee also has a licensing agreement to produce K-Cups for Bigelow Teas. Green Mountain Coffee purchased Van Houtte Coffee in September 2010.