Naegi Castle (苗木城, Naegi-jō) was a Japanese castle that formed the administrative center of Naegi Domain, a feudal domain of the , located in what is now part of the city of Nakatsugawa in Gifu Prefecture, Japan. It also referred to as the Misty Castle (霞ケ城, Kasumi-ga-jō), Naegi Castle was also known as "Akakabe Castle", as its walls were not white like many Japanese castles, but made with a reddish colored clay. The ruins have been protected as a National Historic Site since 1981.