The Dornier Do 11 was a German medium bomber developed in secret in the early 1930s. It was originally called the Dornier F before being renamed by the Reichsluftfahrtministerium (RLM) in 1933 and was considered a heavy bomber at the time. It came into service in 1932, a continuation of a line of bomber designs going back to the Dornier Do P in 1930 and the Dornier Do Y in 1931. The line would continue to develop with the Dornier Do 13 and Dornier Do 23.