Arima Harunobu was a Japanese samurai lord who was the daimyo of Shimabara Domain and the head of the Hizen-Arima clan from Hizen Province. In his early years, he was a retainer of Ryūzōji clan.
- Occupation
- samurai
- Position held
- daimyo
- Citizenship
- Japan
- Born
- 1567
- Died
- June 5, 1612, May 6, 1612
