Ichishi Iida (born 1982) is a Japanese writer, editor, and publishing journalist specializing in the publishing industry, content business, and reading culture. His work examines the Japanese book market, manga, light novels, digital publishing, and changing reading habits through a combination of market analysis and on-the-ground reporting. His best-known book, "How Local Bookstores Have Disappeared: The Untold Postwar History of Japan's Bookselling Industry," traces the postwar evolution of Japan's bookselling business while exploring the structural challenges that have reshaped independent bookstores and book distribution.