Masaaki Tanaka (February 11, 1911 – January 8, 2006) was a Japanese author notable for his book What Really Happened in Nanking: The Refutation of a Common Myth, which denies that the Nanking Massacre as traditionally understood took place. Originally written in Japanese in 1987, an English version was published in 2000 in response to Iris Chang's book, The Rape of Nanking.