Nord-Rana (historically: Mo herred) is a former municipality in Nordland county, Norway. The 3,980-square-kilometre (1,540 sq mi) municipality existed from 1839 until its dissolution in 1964. From 1839 until 1844, it was named Nord-Ranen, from 1844 until 1923, it was called Mo, and then from 1923 until 1964 it was named Nord-Rana. The former municipality was located at the innermost part of the Ranfjorden. It encompassed the eastern 90% of what is now Rana Municipality. The administrative centre was the village of Ytteren, just north of the town of Mo i Rana.