Sandåker is a village in Dønna municipality in Nordland county, Norway. It is located on the island Løkta, and has the postal code 8813 Kopardal, named after the neighboring village Koppardal.
Sandåker and Løkta previously belonged to the municipality Nesna, which is today located to the east of Løkta. On 1 January 1962 the island, which had 80 inhabitants at the time, was moved administratively to Dønna, which on that day came to existence after a merger between Dønnes and Nordvik.