Elisabeth Helene von Vieregg (4 May 1679 – 27 June 1704),[1] Countess of Antvorskov, was Danish noble and lady-in-waiting of German origin.

Born into an ancient German noble family from Mecklenburg, she was the daughter of Prussian minister Adam Otto von Vieregg (1634-1717), who later served as the Prussian ambassador in Copenhagen from 1698 to 1706, and his second wife, Anna Helena von Wolfersdorf (1651–1701).

Elisabeth Helene was made lady-in-waiting to Princess Sophia Hedwig of Denmark, and entered into a relationship with Frederick, who became King the same year (1699).

She gave birth to a son, Frederik Gyldenløve (8 June 1704 – 9 March 1705), and died in childbirth.

After her death she was replaced as royal mistress by Charlotte Helene von Schindel, her lady-in-waiting.