The Crested treeswift (Hemiprocne coronata), is a species of treeswift in the Hemiprocnidae family. The treeswifts are aerial near passerines, closely related to, but distinct from the true swifts. They are restricted to Southeast Asia and Australasia. It was formerly considered conspecific with its eastern relative, the grey-rumped treeswift (Hemiprocne longipennis), but they do not interbreed where their ranges overlap.