Kusunoki (written: 楠 or 楠木, literally "camphor tree") is a Japanese surname. Notable people with the surname include:
Kei Kusunoki (楠 桂) (born 1966), Japanese manga artist
Kusunoki Masahide (楠木 正秀) (died 1446), Japanese samurai
Kusunoki Masaie (楠木 正家) (died 1348), Japanese samurai
Kusunoki Masanori (楠木 正儀) (died 1390), Japanese samurai
Kusunoki Masashige (楠木 正成) (1294–1336), Japanese samurai
Kusunoki Masatsura (楠木 正行) (1326–1348), Japanese samurai
Michiharu Kusunoki (楠 みちはる) (born 1957), Japanese manga artist
Taiten Kusunoki (楠 大典) (born 1967), Japanese voice actor and actor
Tsuneo Kusunoki (楠 恒男), Japanese businessman