Athelas Sinfonietta Copenhagen is a Copenhagen-based, Danish chamber ensemble specializing in the performance of modern compositions. It was founded in 1990 and is highly esteemed for the high quality of its work. Artistic Director of the ensemble since 2014 is Jesper Lützhøft while Pierre-André Valade is Principal Guest Conductor.
The ensemble takes its name from J. R. R. Tolkien's fictive Middle-earth plant Athelas,[1] a herb with healing powers twice used by Aragorn to save Frodo in The Lord of the Rings.