The Balmielva or Balmi is a river in Fauske Municipality in Nordland county, Norway. It flows about from the lake Kjelvatnet () at an elevation of north to the lake Langvatnet at an elevation of . The river has a drainage basin of . The river is located a short distance south of the village of Sulitjelma and about southeast of the Fauske.
The Fagerli and Daja hydroelectric power stations, operated by Salten Kraftsamband, are located on the river.