Karl Christian Erdmann of Württemberg-Oels (26 October 1716, Wilhelminenort near Bernstadt – 14 December 1792, Oels) was ruling duke of Württemberg-Oels and Bernstadt.
He had a daughter, Princess Friederike Sophie Charlotte Auguste of Württemberg-Oels (1 August 1751 – 4 November 1789), who married Frederick Augustus, Prince of Brunswick-Wolfenbüttel-Oels. Their marriage was childless.