The Koch family (// KOHK) of industrialists and businessmen is most notable for its control of Koch Industries, the second largest privately owned company in the United States. The family business was started by Fred C. Koch, who developed a new cracking method for the refinement of heavy oil into gasoline. Fred's four sons litigated against each other over their interests in the business during the 1980s and 1990s.
David H. Koch and Charles G. Koch — the two brothers still with Koch Industries — are affiliated with the Koch family foundations. Annual revenues for Koch Industries have been "estimated to be a hundred billion dollars."
- Fred C. Koch (1900–1967), American chemical engineer and entrepreneur who founded the oil refinery firm that later became Koch Industries
- Mary Robinson Koch (October 17, 1907–December 21, 1990), wife of Fred C. and namesake of the company tanker vessel Mary R. Koch
- Four sons of Fred C. and Mary Robinson Koch:
The Koch family foundations are related group of non-profit organizations that began with the establishment of the Fred and Mary Koch Foundation in 1953, and now includes the Charles Koch Foundation, the David H. Koch Charitable Foundation and the Koch Cultural Trust. The organizations collectively have a stated goal of "advancing liberty and freedom" through the support of various causes which further social progress and sustainable prosperity.
Members of the Koch family have given to both conservative and libertarian policy and advocacy groups in the United States, including think tanks like the Heritage Foundation and the Cato Institute, and more recently Americans for Prosperity. Americans for Prosperity and FreedomWorks are organizations with links to both the Kochs and the Tea Party movement.
According to the Koch Family Foundations and Philanthropy website, "the foundations and the individual giving of Koch family members" have financially supported organizations "fostering entrepreneurship, education, human services, at-risk youth, arts and culture, and medical research." 
- ^ "Forbes America's Largest Private Companies". Forbes.com. Retrieved 2011-10-04.
- ^ Koch, Charles C. (2007). The Science of Success: How Market-Based Management Built the World's Largest Private Company. John Wiley & Sons, Inc. p. 6. ISBN 978-0-470-13988-2.
- ^ "Koch Industries, Inc.". Company Profile Report. Hoover's, Inc. 2010. Retrieved 2010-05-10. "[W]hen he tried to market his invention, the major oil companies sued him for patent infringement. Koch eventually won the lawsuits (after 15 years in court), but the controversy made it tough to attract many US customers."
- ^ "Epic struggle among Koch brothers ends". Houston Chronicle. May 26, 2001. p. 2.
- ^ Mayer, Jane (August 10, 2010) http://www.newyorker.com/reporting/2010/08/30/100830fa_fact_mayer Covert Operations: The billionaire brothers who are waging a war against Obama The New Yorker
- ^ a b Fred and Mary Koch Foundation
- ^ Koch Family Foundations. "Koch Family Foundations and Philanthropy". Retrieved 1 June 2013.
- ^ Zernike, Kate (October 19, 2010). "Secretive Republican Donors Are Planning Ahead". New York Times.
- ^ Charles Koch, in interview with Stephen Moore of the Wall Street Journal. May 6, 2006.
- ^ Vogel, Kenneth P. (August 9, 2010), "Tea party's growing money problem", Politico, retrieved 2011-06-14
- ^ Fenn, Peter (February 2, 2011), "Tea Party Funding Koch Brothers Emerge From Anonymity", U.S. News & World Report, retrieved 2011-06-13
- ^ http://www.newsobserver.com/2010/04/01/416264/americans-for-prosperity-to-host.html
- ^ http://www.scpr.org/blogs/brand-new-day-madeleine-brand/2010/09/04/1834/koch-brothers-money-goes-prop-23/
- ^ http://kochfamilyfoundations.org/Foundations.asp
- Angel Soft
- DensArmor Plus
- Mardi Gras
- Quilted Northern
- Soft 'n Gentle
- Vanity Fair
- Flint Hills Resources
- Koch Chemical Technology Group
- Koch Fertilizer
- Koch Minerals
- Koch Pipeline Company
- Koch Supply & Trading
- Matador Cattle Company