The white-shouldered fairywren (Malurus alboscapulatus) is a species of bird in the Australasian wren family, Maluridae. It is found in New Guinea.
The adult male is all shiny black except for their white shoulders (scapulars), but unlike the better-known Australian fairywrens there is no eclipse male plumage. The tail is shorter than that of other fairywrens. The bill is black, and the feet and eyes are black or dark brown. The females of M.a alboscapulatus and M.a naimii bear a pied plumage, with black upperparts contrasting with white shoulders and underparts.