Miyu Nagaoka (長岡 望悠, Nagaoka Miyu, born July 25, 1991) is a Japanese volleyball player who plays for Hisamitsu Springs. She is a left-handed Opposite spiker known for her high vertical jump and high spike speed. She has been part of Japan women's national volleyball team since 2013, as a lead scorer in her debut in the 2013 Montreux Volley Masters where she was awarded "Best Spiker" and was also the lead scorer during the 2016 Summer Olympics.