Sally "Sarah Barta Jenny" von Kügelgen (2 March 1860 – 16 October 1928) was a Baltic-German painter.

She was the granddaughter of the painter Johann Karl Ferdinand von Kügelgen.

She completed her skills in Saint Petersburg with Ivan Kramskoi and as a guest student at the art academy in the Russian capital.

Her most important work in Estonia are the frescoes about the life of Christ in Tallinn's Karlskirche ( Kaarli kirik ).

They were created in 1889 based on sketches that Carl Timoleon von Neff (1804–1876) had actually designed for St. Isaac's Cathedral .