Hudson Institute is an American conservative think tank based in Washington, D.C. It was founded in 1961 in Croton-on-Hudson, New York, by futurist Herman Kahn and his colleagues at the RAND Corporation.

John P. Walters is the president and chief executive officer of Hudson Institute; he was appointed in January 2021. He joined Hudson in 2009 as the executive vice president and most recently was the chief operating officer. Previously, Walters was Director of the White House Office of National Drug Control Policy (ONDCP) in the George W. Bush administration. He held that position from February 5, 2001 to January 20, 2009. As the U.S. "Drug Czar", Walters coordinated all aspects of federal anti-drug policies and spending. As drug czar, he was a staunch opponent of drug decriminalization, legalization, and medical marijuana.