Ethereal wave, also called ethereal darkwave, ethereal goth or simply ethereal, is a subgenre of dark wave music that is variously described as "gothic", "romantic", and "otherworldly". Developed in the early 1980s in the UK as an outgrowth of gothic rock, ethereal wave was mainly represented by 4AD bands such as Cocteau Twins, This Mortal Coil, and early guitar-driven Dead Can Dance.

In the second half of the 1980s, the genre continued to develop in the United States and was primarily associated with C'est La Mort Records, which featured artists such as Area (later the Moon Seven Times) and Heavenly Bodies, a band formed by ex-members of Dead Can Dance and This Mortal Coil, as well as with Projekt Records, which featured groups like Black Tape for a Blue Girl.

Ethereal wave, especially the music of Cocteau Twins, was one of the key inspirations for the British dream pop/shoegazing scene of the late 1980s and early 1990s.