Kochland: The Secret History of Koch Industries and Corporate Power in America is a 2019 book by Christopher Leonard about account of how Koch Industries became one of the biggest private companies in the world.

Leonard traces the history of Koch Industries from a regional pipeline company to a sprawling corporate entity with "a political-influence machine of rare scope".

This section includes the first real comprehensive look at the astronomical profits Koch generated in the commodities markets, its purchase of Georgia-Pacific, and its participation in the events that created the 2000 California electricity crisis.

In The New Yorker, Jane Mayer described the book as a “deeply and authoritatively reported" work that "marshals a huge amount of information and uses it to help solve two enduring mysteries: how the Kochs got so rich, and how they used that fortune to buy off American action on climate change”.

Leonard does not judge the Kochs; he explains them — their operations and acquisitions, successes and failures, trading strategies, business philosophies and family feuds'.