Ogori Shoji, who operated a men's clothing store "Men's Shop OS" (メンズショップOS) in Ube City, Yamaguchi Prefecture, Japan in May 1963 (remodeled into UNIQLO in April 1992), in June 1984 A comprehensive clothing store "Unique Clothing Warehouse" (ユニーク?クロージング?ウエアハウス) was opened in Fukurocho, Naka-ku, Hiroshima City. It was originally referred to as the English abbreviation "UNI-CLO". In March 1988, when Yuning Garment Factory Co., Ltd., a commodity purchasing company, was established in Hong Kong with local businessmen, the person who registered the business name mistakenly filled in "C" instead of "Q" as the business registration name. After that, President Yanai Masaru made the mistake and added the Japanese name. All store names have been changed to use "UNI-QLO" as a trademark. In September 1991, the name of the parent company was changed to Fast Retailing (ファーストリテイリング, Fast Retailing).

From Wikipedia.