Kiyoshi Kiyosawa (清沢 洌 Kiyosawa Kiyoshi, 8 February 1890 – 21 May 1945) was a Japanese journalist and writer who is most well-known for his wartime diary that was written between 1942 and 1945, but was first published under the name of (暗黒日記) after the war, in 1948, where it caused a sensation. It was first published in the English-speaking world as A Diary of Darkness: The Wartime Diary of Kiyosawa Kiyoshi in 1999. Kiyosawa had a liberal perspective which supported free speech, and as a result most of his diary is dedicated to criticism of the militaristic atmosphere of the Japanese public, the decisions of the military government during the war, and increasing bureaucracy. He was friends with the fellow liberal journalist Tanzan Ishibashi, who appears several times in his diary entries