The Treaty of London or London Convention or similar may refer to:

• Treaty of London (1358), established a truce between England and France following the Battle of Poitiers
• Treaty of London (1359), which ceded western France to England
• Treaty of London (1474), an alliance between England and Burgundy against France
• Treaty of London (1518), a non-aggression pact between Burgundy, France, England, the Holy Roman Empire, the Netherlands, the Papal States and Spain
• Treaty of London (1604), a conclusion of the Anglo-Spanish War
• Treaty of London (1641), between England and Scotland
• Treaty of London (1700), also known as the Second Partition Treaty
• Convention of London (1786), which allowed British settlers in Belize to cut and export timber
• Convention of London (1814), or the Anglo-Dutch Treaty of 1814, which returned some colonies to the Netherlands
• Treaty of 1818 or London Convention of 1818, between the United States of America and the United Kingdom
• Treaty of London (1824) or Anglo-Dutch Treaty of 1824, which resolved disputes from the 1814 treaty
• Treaty of London (1827), an alliance between Britain, France, and Russia, for the end of Ottoman action in Greece
• Treaty of London (1832), which followed the London Conference of 1832, between Britain, France and Russia, creating an independent Kingdom of Greece
• Treaty of London (1839), which recognised the independence and neutrality of Belgium
• Convention of London (1840), which granted Muhammad Ali Pasha hereditary control over Egypt
• London Straits Convention (1841), which closed the Bosporus and the Dardanelles to warships
• Convention of London (1861), between Britain, France and Spain, which agreed upon a course of action towards obtaining loan repayments from Mexico
• Treaty of London (1864), which united the Ionian Islands with Greece
• Treaty of London (1867), which guaranteed the neutrality of Luxembourg
• Treaty of London (1871), between Prussia, Austria, Turkey, Britain and Italy, which reversed the neutralization of the Black Sea
• London Convention (1884), between the United Kingdom and the South African Republic
• Treaty of London (1890), between the United Kingdom, the German Empire and the Kingdom of Portugal, over territorial claims in Southern Africa
• Convention for the Preservation of Wild Animals, Birds and Fish in Africa (1900)
• Treaty of London (1913), which ended the First Balkan War
• Treaty of London (1915), between the Entente powers and the Kingdom of Italy
• London Naval Treaty (1930), which established limits on naval fleets and construction programmes
• Convention Relative to the Preservation of Fauna and Flora in their Natural State (1933)
• London Convention on the Definition of Aggression (1933)
• Second London Naval Treaty (1936), which furthered naval arms control limits
• Anglo-Soviet Treaty, signed in London on 26 May 1942
• London Protocol (1944), agreement between the Allies of World War II on dividing Germany into three occupation zones after the war
• Treaty of London (1945), the legal basis for the Nazi trials
• Treaty of London (1946), which ended the British mandate over Transjordan
• Treaty of London (1949), which created the Council of Europe
• Treaty of London (1956), which promised independence to British Malaya
• London Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter (1972)