"The Old Book of Tang" (Jiu Tangshu or Kutojo in Japanese) was a book of history compiled by Liu Xu and others under the reign of Shi Chonggui of Later Jin of the Five Dynasties and Ten Kingdoms Period in China.
『旧唐書』（くとうじょ）は、中国五代十国時代の後晋石重貴の時に劉クらによって編纂された歴史書。