More than one Artist with this name. 1) San Francisco based downtempo / trip-hop artist and vocalist.
2) one of the alter-ego of UK based drum n' bass producer Oliver Lomax.
3) Etherial darkwave outfit from Australia comprising Saaroth and Louisa John-Krol.
4) A New York based solo-band who draws inspiration from the Japanese musical movement, Visual Kei. Artemis is also known as Artemis Cephei
5) Former swiss Hardtrance project.