Charlotte von Hagn (born 23 March 1809, Munich; died 23 April 1891, Munich) was a German actress of the Biedermeier-era.
Hagn was a daughter of the businessman Karl von Hagn and his wife Josepha Schwab. Her younger brother was the painter Ludwig von Hagn.
At her first appearance at the 1828 Munich Hoftheater, the audience applauded at once and she had huge successes at the Burgtheaters in Vienna, Dresden, Berlin and Budapest.
From 1838 to 1846 she belonged to the Berlin Hofbühne. She worked in St Petersburg, Hamburg, Budapest and other cities and seems to have been celebrated everywhere she went. Her talent for comedy was apparently based on her beauty and demeanour. She was described as a witty and charming conversationalist, and she competed with Karoline Bauer; the theatre audiences were divided into "Hagnerians" and "Bauerians". She was much less well-suited to tragic roles. Her witty impromptu asides gave her the nickname of "the German Déjazet".
In the spring of 1848 she married the landowner Alexander von Oven and retired from the stage, but she was divorced in 1851. She had an affair with Franz Liszt, who called her the concubine of two kings, and may have had an affair with Bavarian King Ludwig I. He commissioned a portrait of her from his court painter Joseph Karl Stieler in 1828 for his Gallery of Beauties.
After her divorce Charlotte Hagner lived for a time in Gotha, then in Munich, where she died in April 1891. She was buried as Charlotte von Oven in the Alter Südfriedhof in Munich. Her grave has been preserved.