Aurlandsfjord (, ) is a fjord in Vestland county, Norway. The fjord flows through the municipalities of Aurland, Vik, and Lærdal. The long fjord is a branch off of the main Sognefjorden, Norway's longest fjord. The fjord is deep and narrow, reaching a depth of about below sea level, and its width is generally less than wide. About south of the mouth of the fjord, the Nærøyfjord branches off from it to the west. The village of Flåm sits at the innermost part of the Aurlandsfjord; other villages along the fjord are Aurlandsvangen and Undredal. Most of the fjord is surrounded by up to tall, steep mountains with little habitation along the fjord except for in a few small valleys.
Tremors of the 2011 Tōhoku earthquake and tsunami arrived 12 minutes later in Aurlandsfjord, causing 1.5 meter waves for a few hours.
Large parts of the fjord are included in the Nærøyfjord section of the West Norwegian Fjords UNESCO World Heritage Site.