Benigna Gottliebe von Trotta genannt Treyden, later Biron (15 October 1703 – 5 November 1782), was a Duchess consort of Courland and lady-in-waiting to Anna of Russia, during her tenure as duchess, and a state lady during her reign as empress.

Benigna is described as haughty and bad tempered and marked with smallpox, but also as a diligent parent and lady in waiting.

She spent great amounts of money on clothes and jewelry and also received many costly gifts from Anna.

She shared her husband's imprisonment in 1740 and returned with him to Courland in 1763, where she spent the rest of her life at the court in Mitau (Jelgava).

She is described as a good painter and textile artist, and she and her daughter embroidered a tapestry of silk which were displayed in the Jelgava Palace.