- Birthdate: April 17, 1977
- Birthplace: Fukuoka Prefecture
In 1990, Nakayama Hiroko first participated and be chosen for the Kyushu region finalist for the Horipro Scout Caravan contest. After the competition, she appeared in various games and television doramas, including being the main heroine in the Fuji Television dorama Utau! Ootatsu Kyuujou. She also became a member of the idol group Sakurakko Club around this time.
After appearing in numerous games, Nakayama would go onto release her first photobook in 1998. Her next book two years later was her first nude photobook.
- [1998.07.xx] reminiscence Tsuioku - Nakayama Hiroko First Shashinshuu (reminiscence 追憶―中山博子ファースト写真集)
- [2000.04.xx] fuse - Nakayama Hiroko Shashinshuu (fuse―中山博子写真集)