Adolf Ulrik Wertmüller (February 18, 1751 – October 5, 1811) was a Swedish painter whose notable works include Danaë receiving Jupiter in a Shower of Gold.

Wertmüller was commissioned by Gustav III of Sweden for a portrait of Marie Antoinette, which is now in the Nationalmuseum in Stockholm.

In 1787, he produced his masterpiece Danaë, a work which proved controversial as one of the earliest female nude paintings exhibited in America.

[2] Wertmüller first emigrated to the United States in May 1794 and continued his portrait work, most notably of General George Washington,[3] but in 1796 was called back to Sweden, eventually returning to Philadelphia in 1800.

[4] His article in Appletons' Cyclopædia of American Biography says (regarding his portraits of Washington): "Though the work of an excellent artist, they are hardly successful as portraits, for Wertmüller belonged to that ideal French school, which usually sacrificed truth to nature for elegance in execution."