Nobuyuki Idei (出井 伸之, Idei Nobuyuki; born November 22, 1937) is a Japanese businessman. He was chairman and group chief executive officer of Sony Corporation until 7 March 2005. He is a director of General Motors, Baidu, Yoshimoto Kogyo and Nestlé.
After a stroke sidelined former chairman Akio Morita, Sony CEO and new chairman Norio Ohga selected Idei to be the next president, a choice that raised eyebrows at Sony. His sweeping reorganizations of the company included trimming the board of directors from 38 members dominated by company management to 10 with a substantial presence of outsiders. Already perceived as the company's driving force, Idei was formally named co-CEO in 1998 and sole CEO in 1999. In 2000, while Ohga remained chairman of the board, Idei became executive chairman and Kunitake Andō became president.
In 2003, on Ohga's retirement, Idei became the sole chairman, and the title of chief executive officer was altered to group chief executive officer. On March 7, 2005, it was announced that Idei would be succeeded on June 22 by Sir Howard Stringer.
In 2006, Idei joined the board leading Accenture. On September 28, 2011, Idei joined the board of directors of Lenovo.
On February 5, 2015 Idei retired from Accenture's board of directors.
1 Currently manufactured by General Mills in the United States and Canada. Produced by Cereal Partners under the Nestlé brand elsewhere. 2 Brand owned by General Mills; U.S. and Canadian production rights controlled by Nestlé under license. 3 U.S. production rights owned by The Hershey Company. 4 U.S. rights and production owned by the Smarties Candy Company with a different product. 5 U.S. rights and specific trade dress owned by Nestlé; rights elsewhere owned by Associated British Foods. 6 Produced by Cereal Partners, branded as Nestlé. 7 Produced by Cereal Partners and branded as Nestlé in the United Kingdom and Ireland. Produced by Post Foods elsewhere. 8 Philippine production rights owned by Alaska Milk Corporation. 9 Singaporean, Malaysian and Thai production rights owned by Fraser and Neave. 10 Used only in Indonesia, Thailand, and Cambodia. 11 Used only in the Philippines. 12 U.S. production rights owned by the Ferrara Candy Company. 13 North American rights and specific trade dress to all packaged coffee and other products under the Starbucks brand owned by Nestlè since 2019. 14 Brand owned by Mars, sold by Nestlé in Canada.