Hardanger embroidery or "Hardangersøm" is a form of embroidery traditionally worked with white thread on white even-weave linen or cloth, using counted thread and drawn thread work techniques. It is sometimes called whitework embroidery.
Hardanger embroidery gets its name from the district of Hardanger in western Norway, where it was known simply as hvitsøm (whitework). Traditionally, this geometric embroidery and cutwork technique was worked in white linen thread on handwoven white linen fabric and used only as trim on garments.