Diplomacy is an 1878 English play which is a translation and adaptation by B. C. Stephenson and Clement Scott of the 1877 French play Dora by Victorien Sardou. It saw frequent revivals and was a popular play for over fifty years.

The Scala Theatre was a theatre in Charlotte Street, London, off Tottenham Court Road. The first theatre on the site opened in 1772; the last was demolished in 1969, after a catastrophic fire. From 1865 to 1882, the theatre was known as the Prince of Wales's Theatre.