Jirō Akagawa (born 1948) is a Japanese novelist best known for his prolific contributions to the mystery and crime fiction genre. Born in Fukuoka, Japan, he began his writing career in the late 1970s and quickly gained recognition for his engaging storytelling and unique ability to blend suspense with humor. Over the decades, Akagawa has established himself as one of Japan’s most popular and widely read authors, with millions of copies of his works in circulation.

His novels often center on intricate mysteries, eccentric characters, and unexpected plot twists, offering readers both entertainment and thought-provoking narratives. Among his most recognized works are the Cat Detective Holmes (Mike-neko Holmes) series, which follows the adventures of a detective cat solving crimes, combining lighthearted storytelling with classic mystery elements. His versatile approach has made him beloved not only by mystery enthusiasts but also by a broader audience that appreciates his creativity and wit.

Beyond the Cat Detective Holmes series, Akagawa has written numerous stand-alone novels, short stories, and serialized works, showcasing his versatility as a writer. Many of his stories have been adapted into films, television dramas, and stage plays, extending his influence beyond literature. His enduring popularity and consistent output have earned him a place as a key figure in contemporary Japanese fiction, particularly within the mystery genre.