Mitsubishi Ki-67 Hiryu (飛龍, "Flying Dragon"; Sekutu pelaporan nama "Peggy") adalah pembom berat bermesin ganda yang diproduksi oleh Mitsubishi dan digunakan oleh Angkatan Udara Imperial Jepang di Perang Dunia II. Sebutan panjang Army adalah "Tipe Army 4 Heavy Bomber" (四式重爆撃機).
Bueschel, Richard M. Mitsubishi Ki-67/Ki-109 Hiryu in Japanese Army Air Force Service. Atglen, PA: Schiffer Publishing, Ltd., 1997. ISBN 0-7643-0350-3.
Francillon, Ph.D., René J. Japanese Aircraft of the Pacific War. London: Putnam and Company Ltd., 1970 (2nd edition 1979). ISBN 0-370-00033-1 (1st edition); ISBN 0-370-30251-6 (2nd edition).
Francillon, Ph.D., René J. Japanese Aircraft of the Pacific War. Annapolis, MD: Naval Institute Press, 1995.
Green, William. Famous Bombers of the Second World War. London: MacDonald & Jane's (Publishers) Ltd., 1975 (2nd Edition). ISBN 0-356-08333-0.
Green, William. Warplanes of the Second World War, Volume Three: Fighters. London: Macdonald & Co. (Publishers) Ltd., 1961 (seventh impression 1973). ISBN 0-356-01447-9. (On the Ki-109 Fighter version)
"Masterpiece to Manned Missile...Mitsubishi's Final Bomber". Air International, July 1983, Vol. 25 No. 1. pp. 25–33, 47. ISSN 0306-5634.
Eidai Hayashi, Suicide heavy bomber "Sakura-dan", Tohoshuppan (Osaka, Japan), 2005, ISBN 978-4-88591-955-8.