Hiro Saga (?? ?, Saga Hiro, 16 April 1914 – 20 June 1987) was a Japanese noblewoman and memoir writer.
She was the daughter of Marquis Saneto Saga and a distant relative of Emperor Showa.
She was married in 1937 to Pujie, the younger brother of Puyi, the last monarch of the Qing dynasty of China between 1908 and 1912 and the puppet ruler of Manchukuo between 1932 and 1945.
After her marriage to Pujie, she was known as, and identified herself as, Aishin Kakura Hiro (????•?) or Aixin-Jueluo Hao in Chinese.