This Treaty of London (among many others) was signed by the United Kingdom, France, and Russia on July 6, 1827.

The three main European great powers had called upon Greece and Turkey to cease hostilities. The allied powers had mainly wanted this treaty to cause the Ottoman Empire (the true name of Turkey at the time) to create an independent Greek state. It stated that while Turkey should recognize the independence of Greece, the Sultan of the Ottoman Empire would be the supreme ruler of Greece. However, Turkey, basing its decision upon its (supposedly) superior naval force, declined to accept the treaty. This directly caused the allied victory at the Battle of Navarino, which forcefully and effectively created the independent Greek state.