Toshihiro Okuyama (born 1966) is a Japanese journalist, investigative reporter, and Professor of Journalism at Sophia University. After graduating from the University of Tokyo's Faculty of Engineering and completing postgraduate studies at its Institute of Journalism, he joined The Asahi Shimbun in 1989. He worked as an investigative reporter and editor in the newspaper's Mito, Fukushima, Tokyo, and Osaka bureaus before becoming an editorial writer, and joined Sophia University in 2022. His research and writing focus on investigative journalism, whistleblower protection, freedom of information, and public accountability. Widely recognized for his reporting on the Lockheed scandal, the Fukushima Daiichi nuclear disaster, and public-interest disclosures, he received the Shiba Ryotaro Prize and the Japan National Press Club Award for "Declassified: The Lockheed Scandal." His other notable books include "The Power of Whistleblowing" and "Understanding Organizations Through Case Studies of Whistleblowing: What Changed with the Revised Whistleblower Protection Act."