Børgin, or Borgenfjorden, is a fjord branch in the eastern part of Trondheim Fjord in the municipalities of Steinkjer and Inderøy in Nord-Trøndelag, Norway. It has a length of about ten kilometers. The mouth of the fjord, the 100 meter wide sound Straumen, is crossed by a road bridge.
Coordinates: 63°52′44″N 11°20′02″E / 63.87889°N 11.33389°E