Kollafjørður is a village situated on the island of Streymoy in the Faroe Islands. It is located approximately 21.8 kilometres (13.5 mi) by road north of the capital, Tórshavn, and extends for 7 kilometres (4.3 mi) along the fjord of the same name.
The village serves as part of the Tórshavn Municipality, having previously functioned as an independent municipality until 2001. As of April 29, 2025, Kollafjørður had a population of 815 residents and uses the postal code FO 410.