Sears, Roebuck and Co., commonly known as Sears, is an American chain of department stores founded in 1892 by Richard Warren Sears and Alvah Curtis Roebuck and reincorporated in 1906 by Richard Sears and Julius Rosenwald, with what began as a mail ordering catalog company migrating to opening retail locations in 1925, the first in Chicago. In 2005, the company was bought by the management of the American big box discount chain Kmart, which upon completion of the merger, formed Sears Holdings. Through the 1980s, Sears was the largest retailer in the United States. In 2018, it was the 31st-largest. After several years of declining sales, Sears's parent company filed for Chapter 11 bankruptcy on October 15, 2018. It announced on January 16, 2019, that it had won its bankruptcy auction, and that a reduced number of 425 stores would remain open, including 223 Sears stores.

A department store is a retail establishment offering a wide range of consumer goods in different areas of the store, each area ("department") specializing in a product category. In modern major cities, the department store made a dramatic appearance in the middle of the 19th century, and permanently reshaped shopping habits, and the definition of service and luxury. Similar developments were under way in London, in Paris and in New York City (Stewart's).