Ettore Roesler Franz (11 May 1845 – 26 March 1907) was an Italian painter and photographer of German origin.
Roesler Franz was born in Rome. He was a specialıst in the technique of watercolor. His most famous work is a series of 120 aquarelles (water colors) named "Roma sparita" (disappeared Rome), where he portrayed with great realism parts of the city which he supposed were going to be destroyed in the effort to modernize it. Many of his aquarelles are now at the Museo di Roma in Trastevere at Piazza Sant’Egidio.