Elke Cordelia Neidhardt AM (5 July 1941 – 25 November 2013) was a German Australian actress and opera and theatre director.
She appeared in theatre, television and feature films in Germany, Austria, France and Australia, and directed operas in Zurich, Amsterdam, Aix-en-Provence, Salzburg, Vienna, Cologne and Australia.
She is best known in Australia for directing operas with Opera Australia, and most particularly for directing the first full modern Australian production of Richard Wagner's Ring Cycle, in Adelaide in 2004.