London Protocol can refer to one of many treaties signed in London, England:

• Eight Articles of London (1814), secret protocol awarding the territory of modern Belgium and the Netherlands to William I of the Netherlands
• London Protocol (1828), statement of war aims of European powers in Greek War of Independence
• London Protocol (1829), amendment of protocol of 1828 expanding Greek borders
• London Protocol (1830), recognized Greece as an independent, sovereign state
• London Protocol (1832), ratified and reiterated terms of Treaty of Constantinople
• London Protocol (1852), altered succession of duchies of Schleswig and Holstein to maintain personal union with Denmark
• London Protocol (1862), reiterated terms of Anglo-Japanese Treaty of Amity and Commerce
• London Protocol (1877), British pledge of neutrality in Russo-Turkish War in exchange for limitation of Russian war aims
• London Protocol (1944), Allied agreement to divide Nazi Germany into three occupation zones after World War II
• London Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter (1972), international agreement limiting dumping of hazardous waste at sea
• London Agreement (2000), reduced requirements to translate patents granted under European Patent Convention

• London Protocol (2004), protocol established at Imperial College London for responding to clinical incidents

• London Agreement (disambiguation)
• London Declaration (disambiguation)
• List of conferences in London
• Treaty of London (disambiguation)