Manabu Miyazaki (宮崎 学, Miyazaki Manabu; 25 October 1945 – 30 March 2022) was a Japanese writer, social critic and public figure. He is the author of several best-selling books in Japan. His autobiography Toppamono sold 600,000 copies and has since been translated into English.

In 1985, Miyazaki was named by the Tokyo police as the prime suspect in the Glico Morinaga case, a 17-month saga of kidnapping and corporate extortion. He was later cleared.