Frederick Robinson Koch (1938-2020) was an American art collector, philanthropist, and theater producer, best known as the younger brother of industrialist Charles Koch and a former stakeholder in the family-owned Koch Industries. Born into the wealthy Koch family in Wichita, Kansas, Frederick was the son of Fred C. Koch, founder of the oil refining company that grew into a multinational conglomerate. He briefly worked in the family business after graduating from Harvard but became disillusioned with its direction and was bought out of his minority share in 1983 for approximately $470 million, allowing him to pursue personal interests away from the corporate world. Maintaining a low public profile, Frederick focused on cultural patronage, amassing a significant collection of rare books, manuscripts, and artworks, including pieces by Picasso and Warhol, which he later donated to institutions like the Metropolitan Museum of Art. After the buyout, Frederick resided primarily in New York City and Southampton, Long Island, where he immersed himself in the arts scene. He produced several Broadway plays and operas, including revivals of works by Philip Glass, and established the Frederick R. Koch Foundation in 1988 to support theater, opera, and literary projects. Openly gay, he was in a long-term relationship with artist and designer David Koch (no relation), and his philanthropy extended to LGBTQ+ causes and cultural preservation. Frederick's life contrasted sharply with his brothers' political activism; he avoided involvement in conservative politics and instead channeled his wealth into quiet support for the arts. He passed away in 2020 at age 81 from complications related to Parkinson's disease, leaving a legacy of cultural contributions rather than business empire-building. His decision to exit the family business stemmed from ideological differences, particularly discomfort with the company's growing libertarian political influence under his brothers Charles and David. His buyout settlement provided financial independence, estimated to have grown his wealth into the hundreds of millions through investments, though he lived modestly compared to his siblings. No major legal controversies or scandals are associated with him; his public life was marked by discretion and generosity. Through bequests and foundation grants, his influence endures in American theater and museums, underscoring a path of personal fulfillment over corporate power.