View source for Charles Frederick II Duke of Wrttemberg-Oels

Charles Frederick II of Württemberg-Oels (1690–1761) was a Duke and Regent of Württemberg. Born in Merseburg on 7 February 1690, he was the son of Christian Ulrich I of Württemberg-Oels and Sibylle Marie of Saxe-Merseburg. His father died in 1704 when Charles Frederick was still a minor, placing him under guardianship until he was declared an adult in 1707.

On 21 April 1709, Charles Frederick married Sibylle Charlotte, daughter of Duke Frederick Ferdinand of Württemberg-Weiltingen. The couple had no children.

From 1738, Charles Frederick served as regent of the Duchy of Württemberg during the minority of Duke Charles Eugene. He succeeded Charles Rudolph of Württemberg-Neuenstadt, who had stepped down due to old age. As regent, he improved administration and restored good relations with the Estates, supported by ministers such as Georg Bernhard Bilfinger, Johann Eberhard Georgii, and Frederick Augustus von Hardenberg.

In 1742, the Treaty of Breslau awarded Silesia to Prussia during the War of the Austrian Succession. Although this war affected Europe, Charles Frederick and his successors in Württemberg did not participate. By 1744, Emperor Charles VII declared Charles Eugene an adult, ending Charles Frederick's regency.

After resigning from government in Oels in favor of his younger brother's son, Charles Frederick lived in Międzybórz and later Oels, where he died on 14 December 1761 at the age of 72.