The Lin Biao Diary, is an alleged diary of former Chinese military leader Lin Biao. It was claimed to have been written by his wife Ye Qun between March 1964 to September 1971, on Lin Biao's instructions, concerning important matters surrounding the Chinese Communist Party. It was kept by Communist Party of China as a top secret file until 2006, and was supposed to be unavailable to ordinary citizens, open only to high ranking communist officials.