Hisaya Nakajo (中条 比紗也, Nakajō Hisaya; 12 September 1973 – 12 October 2023) was a Japanese shōjo manga artist. She was well-known for her popular works in the manga genre.

In addition to her primary works, she also used the names Peco Fujiya for yaoi works and Ryou Fumizuki for doujinshi, collaborating with her circle Daisanteikoku.