A. Gary Klesch (born 1947) is an Anglo-American entrepreneur, who in 1990 founded the Klesch Group, a global industrial company, based in Geneva, Switzerland, which he owns and chairs. The Klesch Group of companies has interests in metals, mining, oil and gas, power generation, chemicals and other traditional "heavy" industries. Klesch specializes in principal investing in companies that are operating below their full potential. Klesch is a leading proponent of "value investing", and speaks regularly to professional audiences around the world as an expert in the field of business restructuring, recovery and growth. According to The Economist, "Europe needs people like Mr. Klesch. Its protected firms have been able to ignore basic business principles for too long. With fresh money, Mr. Kles