Kitaarima (北有馬町, Kita-Arima-chō) was a town located in Minamitakaki District, Nagasaki Prefecture, Japan. As of 2003, the town had an estimated population of 4,203 and a density of 160.85 persons per km². The total area was 26.13 km². On March 31, 2006, Kitaarima, along with the towns of Arie, Fukae, Futsu, Kazusa, Kuchinotsu, Minami-Arima and Nishi-Arie (all from Minamitakaki District), was merged to create the city of Minamishimabara.