Shinjō, Shinjo or Shinjou (written: 新條, 新城, 新庄) is a Japanese surname. Notable people with the surname include:
Hiroki Shinjo (新條 宏喜) (born 1973), Japanese footballer
Kazuma Shinjō (born 1951), Japanese science fiction writer
Kiyohide Shinjō (新城 清秀) (born 1951), Japanese karateka
Mayu Shinjo (新條 まゆ) (born 1973), Japanese manga artist
Shinjo Naoyori (新庄 直頼) (1538–1613), Japanese samurai
Shinzo Shinjo (新城 新蔵) (1873–1938), Japanese academic, physicist and astronomer
Tsuyoshi Shinjo (新庄 剛志) (born 1972), Japanese baseball player
Shinjō (written: 真乗) is also a masculine Japanese given name. Notable people with the name include:
Shinjō Itō (伊藤 真乗), (1906–1989), Japanese Buddhist
