"Kirkland Signature" is the private label for Costco.

Costco, properly Costco Wholesale Corporation, is an American-based, multi-national corporation which operates a chain of membership-only warehouse clubs.

As of Sept. 1, 2017, Costco had a total of 741 warehouses worldwide, 541 of them in the United States with 98 in Canada.

As of 2015, Costco was the second largest retailer in the world after Walmart, and as of 2016, Costco was the world's largest retailer of choice for prime beef, organic foods, rotisserie chicken, and wine.

"Kirkland Signature" is sold by Costco at its website and warehouses, and is trademarked by the company. The name is derived from the location (from 1987 to 1996) of Costco's corporate headquarters in Kirkland, WA.

Costco introduced "Kirkland Signature" in 1992. The idea was to provide brand name quality products at discounted prices. "Kirkland Signature" products include everything from food and beverages to clothing.

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