Kazushi Matsumura (born 1988) is a Japanese sociologist specializing in the sociology of science and science and technology studies. He received his Ph.D. from the University of Tokyo and is Associate Professor at the Graduate School of Human Sciences, Osaka University. His research explores how scientific knowledge, evidence, and expertise are produced, interpreted, and trusted within society. Focusing on issues such as scientific denialism, post-truth politics, and the relationship between expertise and democracy, he has emerged as a leading voice in contemporary debates on public trust in science. His best-known book, "Evidence no Shakaigaku" ("The Sociology of Evidence"), traces the historical development of the concept of evidence and examines how scientific proof came to occupy its central place in modern society.
