Salix lanata, the woolly willow, is a subarctic species of willow native to Iceland, the Faeroe Islands and Finland, through to eastern Siberia.

In Scotland it can be found in only a few localities of Perthshire, Angus and Aberdeenshire, generally on rocky mountain sides at altitudes of 600–900 m (1,969–2,953 ft).

The grey-green leaves are rather variable, but generally ovate up to 7 cm (3 in) long by up to 6.5 cm (3 in) wide, covered in silvery-grey "wool" to begin with but less so with age.

The catkins appear in summer (May to July), with male and female catkins on separate plants (like all willows this species is dioecious).

It has gained the Royal Horticultural Society's Award of Garden Merit.